I believe that you are correct. The young people are concerned with bed partners. But when it comes to actual marriage, I believe there are repercussions. I think that more people are staying single now.
Exactly. Guys may not admit it, either. They may like to say the whole time, "I'm cool with a girl who has had many many partners." They will want to appear "cool" and "not a prude". This has the added benefit of convincing lots of women that they can sleep around with no repercussions whatsoever.
But in the end, more often than not, it will affect how a guy sees whatever woman he's with - and the one he ends up marrying will not be one of the "cool" ones.
It is mostly the women who come out on the losing side of this equation.