Disappointment.

After months of talking about having kids together and my boyfriend spending more time with my daughter, he tells me he doesn't know that he is ready for our own kids. He's getting older and I fear he won't ever be in a position where he will feel ready. When we first met I knew that he was someone that hadn't wanted any, but as we spent more time together we had discussion after discussion about having them and planning out when we want to start trying. Personally, I want more kids terribly bad, and as my daughter is about to turn 2, I was hoping to conceive another soon so they wouldn't be far apart. He drops this bomb on me and I think he's fearful that I'm going to leave him. Truth be told, I don't know if I can accept that I may never have another kid, but I want to spend my life with this man. I'm feeling very torn. Opinions? Comments?