A lot of other bisexual guys here similar in age to me (40's) have already made these points, so I'll just say my experiences were similar:
- 1980's US society was very unaccepting of gay sexuality
- Being gay was seen as a negative/insult; people were killed over it, families disowned kids & tossed them out of homes
- If you were even a fraction of a percent less than 100% straight, you were labeled "gay"
- Bisexuality was seen as "being confused" and "not real"
- Sex Ed in the 80's was (at least in my region) FEAR based. Have sex once, bam, she's pregnant and you both have every STD. And those gays? Well, when they have sex they might as well be playing Russian roulette.
Yet, ever since puberty I knew I was attracted to both sexes. I had an internal 'gay panic' moment, probably weekly, throughout junior high, high school, and even early college (I stayed local and lived with my parents). I'd find a guy attractive, then have an argument with myself about it. I can think of 3 half-hearted attempts I made in y teens and 20's at reaching out to another guy, and either they were completely straight or as repressed as I was. Each guy chose to laugh it off as some silly horseplay.
By my 30's I'd pushed down my bisexuality for so long it became habit. I still found guys attractive, but the idea of acting on it was out of the picture.
Then, when I hit my mid 40's something just sort of unwound itself in me. Was it age? Was it seeing society in general being more accepting of a spectrum of sexuality? Was it 30 years of repression finally hitting a breaking point? I don't know. All of them? Some of them?
I think being open about one's sexuality is far healthier than the repression I lived with. And I know there are places in the US and around the world that are still as bad. But at least some progress has been made.