All feelings, perceptions & existence are dukkha because they are an expression of the conditioned element.
There are two elements to be known; conditioned and the unconditioned.
Not knowing the unconditioned which comes to be known through it's realization as the 'nibbananirodhadhatu' [extinguishment-cessation-principle] of the conditioned [dukkha].
The target referent of "cessation of suffering" is the principle by which suffering ends.
It is just that and it is a truth to be attained and seen as it actually is.
It does not belong to anyone nor is it an inherent property of suffering. Suffering is one thing, it's end is another.
Extinguishment of a fire is not an eternal fire, the principle of it's extinguishment is not an inherent property of a flame or it's fuel, analogically the extinguishment of perceived existence isn't an eternal perception of bliss because it's an release from perception itself. It is the end of dukkha, a release & a freedom from dukkha.
I will give an analogy; "If very cruel people conceived a child and raised him as a cruel joke to only know abuse, they would treat him wrong, train him wrong all whilst teaching we are treating you good, you are lucky and we are training you correctly.
Then the child not knowing better might think;'I am so fortunate, my masters are kind to me, they treat me good and are showing me kindness'.
If he were to escape however and learn the truth, he would be horrified by his former existence."
Likewise when one sees the truth of cessation it becomes known as the primary bliss.
Therefore as there are two elements; the conditioned and the unconditioned. There are are two elements to be known; dukkha and happiness.
Here sutta excerpts;
There are, Ānanda, these two elements: the conditioned element and the unconditioned element.
Bhikkhus, there are these three characteristics that define the conditioned. What three? An arising is seen, a vanishing is seen, and its alteration while it persists is seen. These are the three characteristics that define the conditioned.
The born, come-to-be, produced,
The made, the conditioned, the transient,
Conjoined with decay and death,
A nest of disease, perishable,
Sprung from nutriment and craving's cord — That is not fit to take delight in.
There are, Ānanda, these two elements: the conditioned element and the unconditioned element.
“Bhikkhus, there are these three characteristics that define the unconditioned. What three? No arising is seen, no vanishing is seen, and no alteration while it persists is seen. These are the three characteristics that define the unconditioned.”
"There is, bhikkhus, a not-born, a not-brought-to-being, a not-made, a not-conditioned. If, bhikkhus, there were no not-born, not-brought-to-being, not-made, not-conditioned, no escape would be discerned from what is born, brought-to-being, made, conditioned. But since there is a not-born, a not-brought-to-being, a not-made, a not-conditioned, therefore an escape is discerned from what is born, brought-to-being, made, conditioned."
The escape from that [from the conditioned],
the peaceful, beyond reasoning [beyond objectification],
Constant, The not-born, the unproduced, The sorrowless state that is void of stain,
The cessation of states associated with suffering,
The stilling of the conditioned — bliss.
There is, bhikkhus, that base where there is no earth, no water, no fire, no air; no base consisting of the infinity of space, no base consisting of the infinity of consciousness, no base consisting of nothingness, no base consisting of neither-perception-nor-non-perception; neither this world nor another world nor both; neither sun nor moon. Here, bhikkhus, I say there is no coming, no going, no staying, no deceasing, no uprising. Not fixed, not movable, it has no support. Just this is the end of suffering.
'Three feelings have been taught by the Blessed One: pleasant, painful and neutral feelings. But the Blessed One has also said that whatever is felt is within suffering.' Now, with reference to what was it stated by the Blessed One that whatever is felt is within suffering?"
"Well spoken, monk, well spoken! While three feelings have been taught by me, the pleasant, the painful and the neutral, yet I have also said that whatever is felt is within suffering. This, however, was stated by me with reference to the impermanence of (all) conditioned phenomena.[1] I have said it because conditioned phenomena are liable to destruction, to evanescence, to fading away, to cessation and to change. It is with reference to this that I have stated: 'Whatever is felt is within suffering.'
- There is no fire like lust, no crime like hate. There is no ill like the body, no bliss higher than Peace (Nibbāna)
- Hunger is the greatest disease. Aggregates are the greatest ill. Knowing this as it really is, (the wise realize) Nibbāna, bliss supreme.
- Health is the highest gain. Contentment is the greatest wealth. The trusty are the best kinsmen. Nibbāna is the highest bliss.
(Dhammapada verses)
Conditioned existence arises as one thing and ceases as another. Past is one end, future is another end and present in the middle. The cessation of the conditioned is an escape from this everchanging existence.
The pleasant feelings we encounter they are merely bait, there is a snake in the grass and they are compared to borrowed goods.
They are Mara's bait, even a little craving will incline the mind to becoming.
Want a pleasant experience? Well here good sir, take this birth of a body, subject to disease, old age and death. Go on to experience that love, or sensual pleasure and be parted with it, what a cruelty(!). What on earth have we done to deserve being thus crushed again and again?!
Spending most of our lives looking for a footing just to have it pulled out from underneath and falling.
Seeing these flaws, some might say 'Well that's just how it is, deal with it'. So speak the victims of abuse not knowing better.
It's a horrible deal, a trap. Wanting what is pleasant we go along as if we have no choice, tied to old age, sickness and death. As a dumb starving mouse would go for the cheese in a mousetrap perceiving pleasantness in suffering.
We are truly all being abused and we should not compromise our happiness. We should battle Mara with sword of insight and win the unconditional joy because we deserve it and because we can.