I believe I've said before that I think of myself as human in a way that implies "but watch out ;)" before? And I still think that holds true. As someone that isn't quite the bearer of the body I kind of don't have to rely so much on the physical feeling of being to derive 'what' I am from, and I could just as easily be other humanoid or non-humanoid things too! And that's an alluring thought
But I think that's part of it, for me, seeing myself as human by my own decision while leaving the question kind of open too. I think it's very interesting and sexy of me to maybe be something else too in a vague ever-shifting sense, but also clearly deciding to be a silly five fingered flesh meatpile anyway. It's a kind of internal contradiction that brings me happiness to keep going. I don't need to make perfect sense and that's A-OK with me :)
I think another way to put it is...
If I were a shapeshifter then it would be to the human form that I'd return most. If I was wearing a human skin around myself then I would do it of my own volition instead of any sense of obligation. If I were to be some kind of beast that simply looked exactly like a human then I would choose to act as one as much as I wished to. If my humanity were a mask it would be one I gladly wear
I claim humanity for myself because I just think I'd like to, physical and social jank of existing and all