I think the jury is out on whether casual sex is in any way beneficial, particularly for women. I'm with Louise Perry on this one, I think we've been sold a pup and it's actually pretty soul-destroying, not to mention the practical consequences of things like STIs, unwanted pregnancies etc. I don't think it's healthy for society that doing one of the most intimate and vulnerable things you can do with virtual strangers had been so normalised. And actually, a lot the younger generation are moving away from some of the (not so) liberating attitudes of their parents' generations, so this whole attitude of 'do what you like if you're not obviously and immediately hurting anyone' is starting to sound quite dated.
And we all live under 'strictures' of some sort. Hopefully, anyway.