Why does everybody hate Unity?

[JamesTheAwesomeDude]

I've always heard people saying that they dislike Unity, so they're switching to GNOME/Openbox/KDE/etc.

BUT - I can almost never get a straight answer on why it's so bad.

Some things I've heard:

• "It's buggy"
• "It's not very customizable"
• "It's unintuitive"

..but I've never been able to get an in-depth explanation.
As for me, I quite like Unity - it's intuitive, powerful, and it looks pretty sharp.
I just about killed myself trying to create a Unity replica with LXPanel when I installed Lubuntu on the old computer.

What I'm wondering is, what do you guys like/dislike about Unity? Is it your favorite? Do you dislike it, but you use it anyway because you don't want to bother switching it out? Does it really irritate you, so much that you switched to another WM/DE, or perhaps it chased you over to Linux mint?
I want to hear all of your opinions on it!