For many years it was... but PrEP as pointed by @Benjamin_Nicholas has changed the game.
Now BB is not playing the Russian roulette like it was in the 80s, 90's and first decades of the XXI century.
Only if you want to prevent other easily treatable STDs. Unfortunately the use of PrEP has increased the cases of gonorrhea, chlamydia, etc. You can also catch those diseases giving or getting and I've always refused to give/get head wearing a condom.