I'm ready he's not?

I'm 21 and my bf of almost 2 years is 33. We live together and people ask him all the time when we're gonna have kids (I guess bc he's at that age?) every time, he says something like "I don't know not now". At 33 shouldn't he be a bit more interested in it? I mean I know I'm young but I've always imagined myself having a baby young. It's really the only thing I want in life. I'm more than willing to wait but I'd feel more comfortable if he showed more interest. What do you guys think?