How about trying?
You're not sure about that man, but you're thinking of him, so there are things about him that you like. Who knows, maybe you'll find more things to like about him.
The reasons you don't want to go are age gap and children, which I can understand.
But you can also see such dating as an opportunity to get to know children, and who know, you might like his child.

This is insight I'm giving. Eventually the choice is yours