Ok. You are arguing it is actually more natural to have less menstruation—as women did in previous ages. That might well be the case. However, you’re still prescribing an artificial means to get to a “natural” result...when a perfectly sensible natural means is there already as it was for our ancestors.
But why GS, why are doctors—and seemingly you yourself—so reluctant to advocate for a simple behavioral modification over a pharmaceutical solution in this case? It really doesn’t make any sense to me. Some will tell kids not to smoke, not to drink, not to have guns in the house for Pete’s sake, but then turn right around and say “well, you’ll have sex anyway, so here’s the Pill and some Gardasil.”
Far as I can tell, there’s NO medical reason for this attitude...just a very bad assumption inherited from the culture at large (and with Freudian roots I’m sure) that sex is some all-powerful force that cannot be resisted.
The reality is that returning to a culture where girls routinely marry very shortly after reaching puberty, and then proceed to have babies every 18 months, is not something that is viewed as desirable by more than a tiny percentage of the population. It’s totally incompatible with an information-based society which required that the vast majority of the population still be full-time students well past puberty, and devote most of their adult lives to things other than producing babies (including devoting a lot of time and energy to educating the small number of children they have). And having girls and women of menstruating age not having babies constantly, directly increases their risk of breast cancer — it makes no difference if they’re sleeping with a different guy every night and taking the pill, or if they’re celibate nuns not taking the pill.