Was it weird for you when your divorced parent(s) remarried?

My mom just got engaged a few weeks ago, the wedding isn’t for a year, but it’s so weird to me. My parents have been not living together since I was 14, and I’m 21 now so I have no ill will about it, but it’s all kind of strange, the idea of potentially living with my stepdad if I’m still living at home, having an adult stepsister I’ve never met, having my mom have a different last name from me, etc.