From my understanding, the Buddha laid down the rule to not eat afternoon in order to reduce the burden on the laity and to help the sangha avoid a negative reputation.
In the Latukikopama Sutta (MN 66)Latukikopama Sutta (MN 66) the Buddha said that there were many disadvantages to going for alms at night.
"that monks wandering for alms in the pitch dark of the night have walked into a waste-water pool, fallen into a cesspool, stumbled over a thorn patch, or stumbled over a sleeping cow. They have encountered young hooligans on the way to or from a crime."
that monks wandering for alms in the pitch dark of the night have walked into a waste-water pool, fallen into a cesspool, stumbled over a thorn patch, or stumbled over a sleeping cow. They have encountered young hooligans on the way to or from a crime.