Saying Vista is fine and not buggy is literally denying the truth
Have you ever even used it? Or are you just spewing nonsense you've heard from other people?
The only people who hated Vista were the old people "ME NO LIKE CHANGE" because they went from XP to Vista - by the time 7 came around everyone was used to the new kernel change. I am sure if 7 came before Vista it would have been the exact same reaction.