"I love one of my children."
(and finished with, "...and only one"? Or something like that?)
I chose not to have children. That card expressed a big reason why: The possibility that I might not love my own kid filled me with dread. (I'm enough of a selfish bastard to admit the possibility of it.) I don't like commitments you can't back out of, and a child is about the biggest one.
I totally understand that, and I have had the same fears.
I can say for me that having three very different children taught me what love really was, and how I can still find value in someone who sometimes frustrates me (most notably the ESFP kid). I wouldn't have signed up to deal with him originally, if I had gotten a choice in the matter, but he has changed me even as I have changed him; he knows how to enjoy life and live in the moment in a way I never have, and to be expressive and fearless.
Still, for whatever reason, I get along with all three of my kids, and they all want to make the parent/kid relationship work. I don't know how I'd feel if one child was consistently abrasive and rejecting and dismissing. In a case like that, there would be a large quotient of disappointment and anger involved.
But it's just funny how "your kid is your kid," regardless of what they do.
I know some parents' love seems to be conditional, but at least for me, I just can't reject any of them that way. You seem to be self-aware enough to have that within you as well.
(Just commenting here, no argument meant at all.)