Why Does Everyone Hate Windows 8? Should I Upgrade?

Why Does Everyone Hate Windows 8? Should I Upgrade?: Windows 8 is getting a bad rap from a lot of people, but it really does have a lot of good stuff going for it. After all, people hated XP when it came out, too. Here are some of the things people are complaining about, and why they probably don't matter.
Lifehacker has a significantly different view of Windows 8 than I do.  For one thing, I think that the argument that you shouldn't worry about the Start menu going missing because you can download third party tools to replace it is very weak.