Should child plans already be relevant?

Hi everyone

I (21) am currently dating someone (22) since more than a month.

I really like this person and want pursue a relationship but somehow the question of future plans regarding children was asked and we don't seem to find an answer.

The thing is that she definitely doesn't want a child whereas I don't really know and won't know for sure until my 30s but I'm leaning towards no or at least not the typical way of having children.

Personally I don't think it's relevant right now because it's far away (at least in my head) and nothing is sure until then. Also since only her opinion is fixed it's not really a conflict yet.

And while I won't tell her that and make it an official promise or something I can imagine giving up having children for the right person.

What do you think is this a reason to stop dating? and also should it already be relevant?