Here is why…

Both male and female are spending their precious time grunting, moaning, groaning, biting on a piece of stick, pushing out one or two things through a small hole. In the end, they either have one or two little or big shits to deal with. One or two, they’ll always need some tissue.

Either way, they all have to be taken care of… Only difference is, the real shits get flushed, and the others just never seem to get enough.