Is it better to break up if your future goals don’t align?

Here is the thing he wants to have kids young (24) I would be 23 and I don’t, now he says that’s important to him because he doesn’t wan to be an old parent, but I want to be financially secure before all this. he just doesn’t think we will need much and I honestly just now started to change my mind about kids and I still really think I don’t want any or not that young at least. Is it wrong? Is it selfish of me to not want to get pregnant so soon? Should I break up?
Updates:
1 mo
I am 20 atm he is 21 but he wants to get married as soon as he is out of the military in two years and have a family
Is it better to break up if your future goals don’t align?
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