I'm needlessly uncomfortable with saying "I'm human" because I'm more comfortable saying otherwise. When I do say it I mean "I'm not that different", because saying "I'm not human" feels like I'm disassociating with even the friends I respect.

What defines someone as human gets murky sometimes, even outside this subject. You hear people say "they're not human" with regards to sociopaths and those with a lack of empathy. Perhaps then humanity is simply the ability to connect with and function with others of a shared interest.