Because pretty much every debate or issue can be summed up with, "Some people think one way, others think a different way." If we just ignored things and never talked about issues, positive or negative, then nothing would advance and we'd all be incredibly boring to talk to. Yes, we can just stop watching or stop looking at said magicians. But it's an interesting point to talk about (well sort of), and a lot of people find intelligent debate fun. In any kind of debate thread, there's always the one guy who comes in and tries to get people to stop debating for some reason, as if he's trembling behind the wooden bars at the top of the staircase listening to mommy and daddy scream in the kitchen. "Guys, some people think THIS, and some think THIS! This isn't solving anything, let's just go our own separate ways!" We're not fighting, we're having a discussion about something. Discussion and debate displays everyone's opinions and gives life to the community. Yes, actually. See, I like to share myself with the community, and I like to have the community share back. It's exciting and inspiring for me to come and see different people from different regions and cultures, with different philosophies for magic, to say what they think and perform how they perform. It gives me a new outlook and stops things from becoming stale. You can't just "go be original". You have to have ideas, and other people often help shape them (at least they do for me). Even when you develop your own style, you're still being constantly influenced by all the cool things you see. So, if I come on and everyone's performing the same way, doing the same card tricks, with the same lifeless patter, it affects me as a magician. It affects me very much.