Kids?

My SO and I have been together for 7 years. We currently don’t have any kids but we have talked about it. We agreed to wait until we are both financially stable and had our own place to have kids. The problem is I don’t really want to have kids. I have told him this before and he thinks that I will eventually change my mind. I think if I don’t have kids before 30 I don’t want to try at all. Is there anyone who had kids at an older age? How was it? Did you feel like you were too old? We’re in out 20’s BTW. Honestly I feel stuck in my career and nowhere near where I thought I’D be at this point in my life, I don’t want to bring any kids into that. Specially right now when the world is so cruel and crazy.