Criss Angel...all I have to say
LOL, agreed, to the fullest extent. Though at the same time we can learn a lot from Criss Angel. His ability to perform tricks (not the skill but the psychology that he puts into it) is what makes real magic with people. It is why so many outside of the magic community remember him.
As far as if hobbyist ruin magic, I believe the unpracticed one does. As long as you can do it, and do it well, you should be pretty good =)