Thanks everybody. I guess I'm probably a generation older than most of you - raised in the late 60s/70s by very liberal (then) parents who were deliberately open about nudity in the house (we lived in a fairly secluded place - nearest neighbour half a mile away) and questions were asked if we didn't want to swim naked, for example (not pervy ones - it was all a bit hippyish really)
Actually, I'm probably of your generation, born 1951, and I also had the most liberal parents imaginable, though nakedness was not a thing in our home. But I was a full blown hippy and was persuaded at the time that swimming naked with men was just fine. Lots of mixed sex skinny tipping and saunas. I backpacked a lot, travelled the world, met loads of people, had the time of my life.
It's only later I realised it wasn't just fine; and that these lovely open-minded naked male friends were just as pervy as ordinary blokes, just as horny, just as uncommitted and uncaring about women.
The final straw was when I got pregnant and I really wanted the baby (I was early 30s) but he persuaded me to have an abortion -- really, I didn't have any option if he didn't want the baby and help me out, as it was in America, I didn't have a visa, was a student etc.
So I came to my prudishness later in life and through trial and error. I was just sick of being told I was a prude if I didn't want to open my legs to one of these open-minded hippy world-traveller types just going with the flow. I realised I wasn't happy with it at all.
The abortion hit me so very hard. It was devastating. I realised I had to change as men weren't going to. That I had made it too easy for men to access my body. I made up my mind then that "never again".
Never again a man who didn't make it clear from the outset that he wanted me and was ready to commit. That if I happened to get pregnant he'd be there for me and the baby.
So it was a 180 degree change of attitude and I never regretted it. The only man I had since then was my husband and we had two children.