You'd think the death-knell STDs that first popped up in the 80s and 90s would have had that effect. If people are still willing to risk losing their autoimmune system, I think they'll be equally undeterred by the risk of losing a court case.
Yeah, when it comes to sex, people are always going to play the percentages. The motivation to grind our pelvises together is strong enough to make people willing to take all sorts of risks.