Op you might take this the wrong way and it's not meant with any unkindness.
But your problem here is you (in the nicest possible way)-
The way you talk on this thread, your attitude to it all and your "shut down responses" that you use in the post might come across IRL?
"Tell us about you"
"Not a lot to tell"
Etc...
People can't have a conversation with a brick wall - there has to be some reciprocity
It's clear that you seem to be lacking a bit in confidence (absolutely correct me if I am wrong), but what is it that makes you you?
I am an average joe too - but my friends would say that I am good at making people laugh and I tell a good story...
Personally, I like music, books and baking.
If I wanted to find a "mate", I might try a reading club, comedy night, a festival or pub where someone was playing a gig, etc...
Being hapless and apathetic will not work. It's like most things, if you want it you have to put work in for it.
Giving up at the age of 37 is preposterous - because giving up what you want at ANY age is preposterous...
My question to you - does your want for this trump your reasons not to try to get it?
This isn't a personal attack, op - I wish you luck, but without sounding wanky- you have to make this happen for yourself 