I'll admit Robocop 2 wasn't nearly as good as the first one. But I still liked it anyway, and near as I can tell, I am the only person who feels that way.
I agree that the first one was better (it's my fave film!), but you're not alone in liking the second.
But yeah, #3 was totally lame.
It appears that I'm in the minority. I quiet liked the third one, but it was different - they seemed to go more for a comedy angle.