I understand your anger. Sometimes i feel the same. From the first day i ask herself in my mind only one question - "What have you done". Sometimes i'm asking myself, if i could live with her, if i were gay. I don't know. I guess, i just won't be in that situation. I think that i'm reasonable person, so the risk i take is that i could stand. In various time i become ready in my mind for many things, including childbirth, personal problems in life, problems with health, financial struggle, i even prepared myself for a possibility of death or terminal illness. It comes naturaly with age.
But this situation is blowing my mind. I could do nothing, it's not under my control, everything is the same, but at the same time - it's totally different.
Answering your question, people in last century lived in more conservative society. I don't think that you would want your wife to end her life with a mental disorder. Mine was going crazy. She felt really bad and guilty all the time. Just we were looking for reasons not were problem was.
I'm in doubt if i could sacrifice for the family. I wish i could tell that being gay i would love her and pretend to be a good husband and father for our kids, but i'm in doubt. I guess, i can not imagine what's it like to be homosexual and live with heterosexual.
So families decades ago didn't live well, i guess. Suppresed by society norms women and men couldn't do anything but pretend to be living a good life. I guess there were many mental problems from that or even worse.