#2 is a big one (I really don't want to see the environment that produced the Pentium4 all over again), and #3 isn't unknown either.I'm cheering for AMD for three reasons:
1) We have some AMD stock which has doubled in value since we bought it 8 months ago
2) Intel having competition is good for everyone. Without AMD over their shoulder, Intel would be charging even more for their processors and the product release cycles would be further apart.
3) A weird propensity to support the underdog.