It’s harder to feel alone when you’re 23, because everyone is a potential partner.

But when you get to 40, most people your age are already settled down.

That's something not everyone thinks this is a good thing. The worry about online dating comes from theories about how too much choice might be bad for you.

The idea is that if you’re faced with too many options you will find it harder to pick one, that too much choice is demotivating.

People used to marry in their early 20s, which meant that most dating that was done, or most courting that was done, was done with the intention of settling down right away.