How to tell my mom I may not want kids, and I’ll never be a housewife/homemaker?

It's your decision on how you live your life and I think that it's great that you want to go to college and start a career. As for the marriage thing, it doesn't have to happen right away. I mean it can wait a couple of years right? Until you get a degree, start a business, maybe grow up and mature a little. What your saying now may not be what you feel in oh say, seven or so years? I think you should tell your mom right now instead of letting her hopes rise up.