I gotta say even though not having kids seems like the most economically sane thing to me, it often makes me wonder, what will be the point of life after retirement. I have no wife, g/f or kids. Right now my only 'why' is to not disappoint my family and cause a couple of them could use my help financially. Other than that, I don't see a long term 'why'. My only compelling short term 'why' is that I don't want to be homeless. But that's pretty much a working to live and living to work type of reason to exist.

Oh that and that the dog will miss me. But as we all know they don't live for long.

If you don’t have hobbies you pour your free time into, you are robbing yourself.

The purpose of work (for most people), once you’re past comfortable survival, should be to buy time for you to spend living your life in ways you enjoy and that gives you meaning. If you don’t have something that gives you that feeling, find it!