My younger brother does not like kids and is always glad he never got married and does not have kids when he sees them.
I have 4 kids of my own with the youngest being 11 months old and the oldest being 8 years old and yes the older ones can be brats.
My younger brother does not want to even know my kids and I never told them that he exists and he lives 500 miles away anyway.
He cannot stand to be around kids and says seeing or being around other kids makes him realize that he did make the right decision to not have kids.
I love my kids but they are a pain sometimes and yes it's hard work and I'm stressed out.
But having kids is not for everyone and if so that's okay.
Even myself I seem dead inside when I'm around my kids but I do love them.