Just come along and enjoy it.

There are plenty of people of your age that are single, as a matter of fact people living on their own is one of the fastest growing segments of population in the UK.

I have no children and enjoy the company of all kinds of people and can talk about baby food if needed, I don't see why single people should have any problem if most of their friends are married with responsibilities.

As being the old geezer, well, so what? You only live once, and if that is with ladies 10 years your junior all the better