If they ever made Halo for PS2/PS3/Mac I would play it, but on the Xbox it's just not worth it.
I've played Halo before. The 3rd person camera sucks, the guns are strange, controls confusing, and just not fun for a noob what-so-ever. And the fact that Xbox makes you pay $10/Month just to play a $60 dollar game on a $300+ console (With controllers, ect.) is just stupid.