suffering after reproductive age is easy to answer—after reproductive age you are almost out of the reach of natural selection, especially e.g. some male wasps who keep living for a while after all the females have already mated and retreated into their nests. The males are now useless, nothing they do will change their reproductive success any more. So whatever happens to them doesn’t count—whether it’s a lot of suffering or the end of all suffering and infinite bliss. Unfortunately there’s no natural selection that would end their suffering after mating chances are depleted. Probably they’ll just keep having the same pain reactions to the same stimuli that they had before and during the mating season (because these already exist, not because they are necessary for anything). Probably they’ll have some additional old age problems accumulating just like old humans, because natural selection is not weeding these out.
suffering after reproductive age is easy to answer—after reproductive age you are almost out of the reach of natural selection, especially e.g. some male wasps who keep living for a while after all the females have already mated and retreated into their nests. The males are now useless, nothing they do will change their reproductive success any more. So whatever happens to them doesn’t count—whether it’s a lot of suffering or the end of all suffering and infinite bliss. Unfortunately there’s no natural selection that would end their suffering after mating chances are depleted. Probably they’ll just keep having the same pain reactions to the same stimuli that they had before and during the mating season (because these already exist, not because they are necessary for anything). Probably they’ll have some additional old age problems accumulating just like old humans, because natural selection is not weeding these out.