Thanks also Poc for your sensitive and well thought out response to this thread, it was just so eloquently written really, your mind is so broad, I wish everyone was as tolerant to other peoples views as you, it would be a much happier place!
Seriously though, you should cop on to yourself. As a punter he has every right to ask any question he will regarding the brewing process of a product if he feels that it goes against his morals. This is obviously something not everyone knows about, I certainly wouldn't have predicted that Isinglass is used in the process of making so many beers.
Also, 'It's bad enough when the women go vegetarian' - I don't even know what this is supposed to mean but I'm sure you wouldn't have posted it if you realised how ridiculous it sounds. Why not contribute something useful to what was a serious post?!