Until more research is done into how women's bodies function, we can't understand so much. We know more about outer space than the bodies of 51% of the population.
I mean, some fibroids might be activated by hormones. Others might not. Similarly, with endo - there are different types of endo and apparently they have finally managed to grow some of this in labs so they can now see what works best for various types. Honestly all this is bonkers, that we don't already know it all. If men had to deal with this s * * t, it would all be mainstream. You'd probably get samples of Vagifem given out like pens or, heck, HRT shops on every street corner and a special consultation at age 40 to discuss how you want to approach menopause or something. And we are 51%. In a majority.