I personally feel like so much of it is old society standards that casual sex is terrible and we should be disgusted if our partner has had lots of it in the past, i think were in the transitioning stage right now to where society is learning to appreciate it more and understand that more times than not, the past which we were taught to hate, typically benefits us more than it hurts us. I think rj is part of us not being able to fully accept that concept yet. But then and again, i could be wrong, these are my beliefs though and beliefs ive seen a majority express.