Vista Product Not Receive Positively Or XP

I have not upgraded to Vista yet, b/c of the bad reports I get from people using Vista. Microsoft can believe it or not, their Vista product has not been received positively, and I hear many people now want to buy Macs. Now, the question I am asking here is, why are people not willing to embrace Vista?

1. Fear of CHANGE? wanting to stick to what worked before like XP
2. Outdated hardware? older computers not able to provide as much memory as vista requires.
3. Vista is just a bad product.

Whatever the reason is, microsoft should hear these cries from their customers seriously and try to address these issues. Just saying "other people have had no problems", is just not good enough. I've seen three different people who purchased computers recently asking me if I still have an XP CD. only to tell them, it wouldn't work for them anyway b/c they have to validate. I would like any take from the people on this group.