What's disgusting about it? You only find it disgusting because you still pedestalize women and feel that she's being "used", when in fact she is an amoral willing participant.
Chances are too that you're a guy who doesn't get a lot of attention from women, right? You're thinking "why can't she be mine? I would treat her so nice and love and respect her, not like these bad men!"
Come time you will learn, they're all the fucking same.
>"Hey let's all get Syphillis!"
Syphilis is cured by low grade antibiotics like penicillin. I'd be more worried about HPV. But frankly, the thing that would bother me most of all would be getting other men's secretions on my body. You cannot wash away that stain.