@RickiTarr It's my understanding that (a) it is now established medical knowledge that we can suppress the menstrual cycle altogether if we choose to, and (b) that so far at least, it appears there are no adverse consequences to doing so. So I don't see any rational option why we don't make it a readily available option.
(Note that I do not consider "controlling women's bodies" to be a RATIONAL reason.)
RickiTarr