That's why people need 9 months of pre marital counseling before getting married. They discuss those things which makes it clear what each person wants and expects.
We barley knew each other much more than 9mo before we got hitched.... that was almost 17yrs ago, and we still don’t agree on some of those life altering choices... both of them
“...maybe you’ll marry, maybe you won’t, maybe you’ll have children, maybe you won’t, maybe you’ll divorce at 40, maybe you’ll dance the Funky Chicken at your 75th wedding anniversary, but what ever you do, don’t congratulate yourself too much, or berate yourself either. Your choices are half chance, so are everybody else’s.”