No, I wont take antibiotics all the time, because STIs are cureable. So I would need Antibiotics, when I've catched an STI.
BUT HIV is not curable (but treatable). So people are trying to stay HIV-negativ with PrEP OR with condoms. Both ways are very effective.
BUT both are not effective in preventing other STIs.
So, if someone wants to use condoms, I'm very fine with that, and if someone wats to take the PrEP, it's ok for me, too.
And HIV and STIs have one thing (or maybe more) in common: most of the people don't know, that they are infected. Only tests can show the infection and the therapy after the test will stop the spreading.