So here's the problem, sleepyguy. If your parents make a lot of money, you get no financial aid. Fine. You also don't qualify for federal loans. Nor work study. Nor many scholarships or any need-based scholarships. Even private loans might be a serious issue.
If you have absolutely none of those things available to you, even state school will generally be financially out of reach.
The emancipation process, for this purpose, is nearly impossible. You basically have to prove that your parents and anyone else who can give you money are dead, in jail, or both. I looked into it, because I was financially independent at 20 and paying for school, but it was a no-go.
So while I don't think that one has an obligation to pay for their kids to go to school... if they have the means, they may well be effectively completely shutting them out of going to school on their own as well.