I'm the same age. have been on my own 8 years now and could never imagine being in a relationship. I understand your caution although I am not an alcoholic, I have worked hard at rebuilding my life after a series of sometimes disastrous relationships.
We are all emotionally fragile at times, but if this were me I would ask myself one question- will this man bring something I don't presently have into my life?
The dilemma is we never really know until they are in our lives, and then the niggles may start...
I wish I knew how to give advice on this one, but I don't except to say be completely honest with him and yourself, and don't jump too far ahead. He may be thinking exactly the same thoughts as you but there's only one way to find out and that is to ask him...
I wish you all the best whatever.