Why is Generation Y having less sex?

Sex is pretty good, isn’t it? Not just because it is useful for making babies, but also recreationally. It makes you happy. In a lot of ways, it keeps you sane, makes you feel excellent about yourself and reinforces your love of others.

So, it might come as a bit of a shock that, statistically, young people are doing a lot less of it. Stop reading this and go get some (but read this first)

Photograph: Alamy