OK so I guess this is following on from Marlk's thread. I think sometimes you just have to do it. The last time I attacked someone/defended myself was twenty odd years ago, I had a little darkroom in the house and mrs P rushed in to say three drunks had banged on the front door and pissed in the doorway...I ran out and followed them into a subway (Fountains roundabout Dave?) and asked them whatthey thought they were doing. The big one took a swing at me and fell over so I punched the middle one and the other ran away.
I felt quite happy, I didn't think I'd assaulted anyone, and if it was the other way round and I'd pissed up someone's door (which I wouldn't) then I wouldn't really complain if I got a tanking as a result.