@Bumpitybumper and others
I am long term single, at 58 I'm no longer sure whether this is now an active choice. Its just my life.
I had a very bad time in my 30s after the breakdown of a long term relationship.
But I got to a point where I realised I had to make a choice to actually live my life or wallow in self pity. I know that sounds harsh, but I think that's the reality.
I am the only single person amongst my friends, some are happily married, one couple are mutually abusive, others just rub along more through inertia than anything else.
I haven't looked for a partner or dated for years, I've built a good life, adopted my son, got the cat etc etc. I don't leap out of bed every morning shouting yey I'm single, nor do I expect my married friends do similar. Yes there are times when I wish someone else was around to cool dinner or put the bins out.
It's not a perfect life, I've had my dark times and learnt to live with the downsides.
I have built a good life - but that comes from within. No amount of telling people to join clubs, get a dog, adopt a child, go travelling etc etc, will fundamentally help. But there is a choice here, focus on the positives in your life, build your support for the times when you are low, people you can have a moan to. Accept that no life is perfect, but truly live the life you have and don't focus on the things you don't have