I'm not as self-destructive as Dylan Thomas, but I've certainly been around that behavior enough to have found it a release. The thing that I really enjoyed was being able to play misery.
Nothing else is as fulfilling as playing a part in which you are able to have a significant say in the creative process all the way through. How many actors get to do that? It's extremely rare.
Obviously I'd love to have kids and all that. Luckily, as a man, there's not such an egg timer on it, but I'd like to be able to pick them up without Nurofen first.