Being human may or may not be a good thing, I'm not getting into that argument. But if you hate what you are, you aren't grateful for it. If you aren't grateful, you are ungrateful. If you are ungrateful, you show signs of ungratefulness. So hating your humanity really does show signs of ungratefulness.
Yes and no. I hate the fact that I'm the same species as some of the most incredibly moronic douchebags out there, or the incredibly selfish, arrogant money-hungry asswipes that call themselves big business... of course, on the other hand, there are a lot of nice people out there. mais or less, I wish that the aforementioned above would just disappear from this Earth, so we all take better care of it... unlikely it is to happen, though... I can't ever see business care mais about the environment than money...
Nah I don't hate the fact that I'm human. Some humans can be bad, but I can be good or bad, or try to put a stop to the bad things us humans do. It's nice to be able to talk and defend things that have a right to be defended. And also to be able to do things like, play video games, go on Fanpop, and etc.
At least, I can cosplay as a different species if I'm not happy with my current one. :d