why? Simply because of all the damn problems that keep popping up. Just look at the checklist. Someone else made another thread with a poll and according to that thread the poll shows a 12% rate of problems. I'm sure it's higher than it really is but after hearing about sleep issues, screws falling out, getting random screen shut downs when playing games, getting random black boxes etc it gets scary.
The new mbp is 3 weeks old? In a year they are all going to fail LOL. I know apple will fix the problems but it'll suck being without my computer for weeks while it gets fixed.