Replying to the OP, as a young woman I watched my friend's mother have 13 children. She said something to me once about the menopause. She couldn't understand why she flew threw it with no problems. Maybe it was because she has 13 children?
I think it depends on the number of egg they have and how its ovulated. In situation where the egg is equal, a woman that ovulates without pregnancy should be the first to reach menopause. If we remember and consider the cyclic events of the hormones LH and FSH.
I think also the ethnicity plays a role. Women of Latin America are starting their menses earlier on average than Nordic women. Thus they were traditionally entering marriage in younger age than North European women, if I recall correctly.
Well nobody stopped a woman from making contribution. Men should have the knowledge especially those in the medical field. Why won't women know about men reproductive system while we have women doctor?
To wear your wedding ring to work or not wear it to work is the question, and depending on what you're trying to accomplish, I believe I have the answers. Things are absolutely less Carol Brady and more real life...