I understand the finance thing. What I've done is to (minimally) get out and go for a walk/hike. I take my dog and we just cruise.
There are sites (like meetup) that let you meet people with similar interests. I'm fairly close to a city that has lots and even in my town there is more than you would think. You can start your won "group" too. Given the economy, I would think cooking, game, reading groups would find takers. Actually, I think anytime is good.
If you don't want to meet at someones home, there are other options.
I can understand how it would make your kids happy that you aren't giving up. I would limit what I say about it though.
If nothing else, you will know that you looked under every bush and turned over every rock. As far as you letting go of the hope...you will if and when it's time.
