You don't like kids do you? At the tender age of 17 I wasn't broody no. I was just shy and kids can be impressionable so I was afraid of upsetting them at my classes so I refrained from cuddles and kept it on a professional level.
I'm not sure what influenced the assumption. I didn't like kids because I had maybe been bullied or that I was gay or I was on aspergers scale. Did you even know what made you ask. It's ok. Don't worry about it.
I do like kids, and I liked teaching.