In all fairness tho.... lets say you have met the requirements or "your parents might be cool".
There comes a point in your adult life that you have undertaken the responsibility and accountability of your life long enough that you recognize what you do in your life is your business....and you get a greater sense of independence from it. If your parents disagree, they can. Its your life and your money.
If you are on your time and your dime..... then you spend it how you want.
It doesnt mean you dont love or respect your parents and their opinions. It means you are making your own choice. Which is just fine....as long as its your choice to make.