In Buddhism having a rebirth is itself a origin of all the Dukhhas. Doesn't it imply that Buddhist laymen who are married should not have children to stop this cycle of rebirth. This leads to a more generic hypothetical question as to what happens if all people in the world stop having children?
I would like to have the answer in the Buddhist perspective.
rebirth is itself a origin of all the Dukhhas.
Not quite. Birth has a requisite condition as well. It's not the case that our birth was the ultimate origin of our suffering.
Doesn't it imply that buddhist laymen who are married should not have children to stop this cycle of rebirth.
Not having children will not stop those beings from being reborn. There are plenty of other organisms to be reborn as on Earth and there are other realms like the Deva world as well.
what happens if all people in the world stop having children?
The entire population of humans could all die and be reborn as insects today and it wouldn't appreciably increase their overall number: adding six billion to 10 quintillion doesn't even amount to a tenth of a percent.
So removing the human path as a rebirth target does nothing in the way of removing suffering.
From the child standpoint:
A human life is considered very precious in Buddhism as it provides a great opportunity for liberation, the human realm is the best of all realms to practice Dhamma, the Buddha attained enlightment in this realm. Dukkha is found in all realms with different intensities.
From the Buddhist (parents) standpoint, there is a related question:
Birth is not the cause of suffering.
Birth is a symptom of suffering.
One person preventing birth does not actually prevent birth or suffering. It's like if you block a river, the water flows elsewhere and forms a new stream or river.
To end suffering, one has to end craving by following the Noble Eightfold Path.
There is also the Buddhist perspective that everything that will happen (physically) in your life has already been determined by your past actions. Your question is not a simple question. It indirectly invokes the questions of free-will, determinism, etc.
Buddhists believe in neither absolute free will, nor determinism. It preaches a middle doctrine, named pratitya-samutpada in Sanskrit, which is often translated as:
So, "dependent arising" and "interdependent arising" mean the same thing. Funny. Hope that helps.
One misconception that I often encounter is that all Buddhists have a single mold that needs to be followed. From this misconception, it's easy to form misleading questions in the form of "Should Buddhists do X?"
I disagree with this line of thought. The Buddha recognised that while all individuals seek to liberate themselves from suffering, the immediate objective that they strive for can vary.
Just as you cannot teach the concept of impermanence to a devotee who has starving parents and children at home, you cannot expect one teaching to fit the needs of all beings. This is also why you can never measure someone else with your own standards. Buddhism is an introspective practice.
As such, asking "Why do I want to have children?" instead of "Should a Buddhist have children?" would encourage more answers of practical value. If I want to have children because it will bring me and my family joy, then yes, it's something I can consider.
Or, if I am someone who likes to inspect further I might ask, "How long will this joy last? What happens if things don't go as planned (illness, accident, conflict, etc.)?" And even then, I might decide that the joy outweighs the risk and go ahead with it. And nobody can fault me. I have carried out my due diligence in weighing the pros and cons, and decided that this is the best path I can take given my present circumstance. And that's okay too.
What I wanted to say is this: being a Buddhist isn't about subscribing to a set of "should-dos" and "should-not-dos". It's about recognising where your present circumstance; where you spiritually want to be in the immediate and long-term; and deciding on the best way to achieve that.
Being a Buddhist means that you are accountable for your own actions. There's no arguing with some deity when you get into trouble even when you followed instructions to a tee.
So...
Q: Should you have children?
A: Are you sure you should let others tell you what you should do? ;-)
