<human>: Give me a shortened version of the text

I'm in my early/mid twenties and I've been with my girlfriend (same age) for the better part of a year. She's the first person with whom I haven't been scared to think of "bigger picture" stuff i.e. long term goals, marriage, kids, etc - all things I eventually want in life. We've talked about moving in together, abstractly talked about being together "years from now," even hinted at marriage. However, she's talked (almost jokingly at times) about not wanting kids, and I've always shrugged it off and not thought much of it. Tired of dancing around it, I asked her point blank, and she flat out told me she did not want children.

There's part of me that says I'm too young not to be living for the moment and simply enjoying a relationship with a girl I'm madly in love with. But how can I do this with full knowledge that our long-term plans do not align on this one particularly important aspect?

Obviously I'm not the first person to ever have this issue. I guess what I'm wondering is...is it really just a question of what's more important to me - kids or her? Is there a deeper, more nuanced way of looking at it?

How do I handle this? Not wanting kids is an eventual dealbreaker for me, but am I too young to even have a dealbreaker like that?? I'm not comfortable waiting for her to have a "maternal epiphany."

With all that in mind, saying that we're "wasting time" feels insulting to how close we are and the incredibly meaningful experiences we have together. Despite all this, I know that at some point I will have to reconcile this with her in some way. Anybody been here before?
<bot>: Mid-twenties, I want kids, she doesn't, we're great together in all other aspects. What do I do?