People tell me “don’t do it”??

I work with kids. Sometimes the parents/caregivers ask me if I have kids. I usually say “I don’t” and then they’ll ask if I plan on having kids, in which I reply I’m not sure yet (I don’t really mind this because I feel like it’s more just making conversation versus anyone judging me). Anyway, the overall response I get is either “don’t do it” or “hold off as long as you can”. It’s kind of in a joke-y way, and I’m sure they aren’t 100% serious, but it does make me think. A lot of the time it’s followed with “it’s a lot of work”, and I work with 1-5 year olds so I’m sure it is more work to parent than if I was working with older kids.

The only people who say to have kids is my family, but I feel like that’s more because they want grandkids, nieces, nephews, etc. I’m not saying everyone regrets their kids of course but it just kind of surprises me?? Maybe it feels more humorous than saying “have kids”? But I’m not even asking people what I should do, they just tell me “ don’t have kids!”. lol is this just me??