I have to agree with Latin that too often your outlook is too negative. Life is a great deal brighter and more fascinating when you banish those thoughts and be much more positive about the future.
I can recall some time around 1987 when I became similarly negative. AIDS had started to take its toll in Thailand and it was announced in the Hong Kong media that bar owners here were talking about banning guys from Hong Kong because more cases had developed there (where I worked). Gay sauna owners in Japan were also on the point of banning non-Japanese in the belief that this would prevent AIDS from spreading (a forlorn hope as AIDS was already taking its deadly toll). Selfishly I thought my sex life would all but come to an end - and I was younger then than you now.
As things turned out the Thai bar owners did not ban anyone, although the Japanese saunas remained closed to foreigners for many years. And there was still lots of gay sex to be found almost everywhere in Asia, even in Singapore and Malaysia where it was - and remains - technically illegal. So my concerns were totally unfounded. But if you are worried about the future of your sex life, please be very, very thankful you never had to live through those dreadful early years of AIDS when infection meant death.