Is it normal to not like kids and be scared of pregnancy?

Is it normal for me to not share any enthusiasm towards kids? Even for family members, when they have kids, I express no enthusiasm. The kids tend to be grumpy, ignore you, and others expect you to be the most enthusiastic person ever because a kid is there, while most of the time, you are being ignored by the kid anyway.

A couple of days ago, my uncle had his birthday, and after he blowed out the candles, they had to be lit again, so that the grumpy, ignorant 2-year old could blow them out again, why? I ask, I mean, the kid would have been just fine without blowing out the goddamn candles, not mentioning, it was a complete waste of time.

I am scared of pregnancy, the thought of something growing in my stomach terrifies me. I don't think childbirth is beautiful, it's natural and all, but I don't think it's a miracle. I don't share any sort of joy, because there are kids, or that kids are being born.

Is this normal? My family tells me my "motherly instinct hasn't kicked in", and I keep on telling them, it won't. And I'm sure it won't. It's hard for me to get a long with a person who likes kids and talks about them sometimes, because I simply don't like them.