<human>: Condense the text into a few key points

I'm in a relationship that is getting pretty serious, and the "future" has come up in conversation from time to time. We're not actively planning to have a kid or anything but I think it's good to talk about "what if". Anyways, she is pretty intent on being a stay at home parent, and I'm having a hard time getting around that in my mind. I feel like the way the economy is today, the "traditional" family thing is almost impossible, especially for younger people like ourselves. Not to mention I would like to spend time with the hypothetical child as well instead of having to be out working my ass off to feed three mouths. 

Maybe I'm just being selfish, I don't know. I really want to talk about how I'm having a hard time with this, but I don't want to come off the wrong way. I mean, I love the damn girl and I'd like to keep her around and have a future with her.

So I thought I'd hit up r/relationships for advice on what I should do or say. Am I being unfair? Is there a way I should approach the topic so that she could understand where I'm coming from? Is she likely to be convinced otherwise? Does anybody have experience with this?
<bot>: SO Wants to be stay at home parent, I'm not okay with it. Don't want it to be dealbreaker.