At what age did you realize you were ready to settle down?

I'm 23, almost 24. Been with boyfriend for almost a year but we've been friends with each other since grade school. I used to party all the time, before and after I was 21. Started around 18 and drank at home with friends. After I turned 21, I loved going out almost every weekend. I haven't done that in awhile so I recently did and I realized that it's just not my thing anymore. In fact. I crave to stay in. I want a family. I want to move on from that part of my life. I just don't care about those things. I've already traveled to Europe twice and all over the US. Got my bachelors degree, working full time in nursing... there's nothing left for me to look forward to except the family I've alway wanted. Any time I tell people this, they think I need to wait longer and be older yet I don't understand how people actually think my age is "too young" for a baby still. I think that as long aa you have your life together, you're solid.