The odds of catching hiv are low, yes, but if it's 1/300 or 1/3000, are you willing to take that risk and be that 1?
If the lottery was offering odds of 1/300 at winning the jackpot, hell, I'd be spending a fortune on it every week.
The last report I read about stats, it was something like 51% homosexual transmission, 47% heterosexual and the rest through needles.
But let's not forget is not just HIV which can stay with you for life. Catching herpes is pretty easy, hence 1 in 6 of us have oral herpes and 1 in 10 have genital.
Then let's not forget the antibiotic resistant strains of ghonnorreah which are becoming more prominent. Green ooze out of your Cock for the rest of your days , with agonizing bollock ache, no thanks.
These girls that offer bareback either already have this stuff, or have a deathwish because there is no way anyone with an ounce of respect would have unprotected sex with good knows how many different punters. Either that or they so dull and stupid that they think they can't catch anything.