I begged my parents to order pizza from me as a kid
How did not getting pizza make you feel?
I hated it at that time, but now I see that they just wanted me to get used to the food that's available.
I think your parents taught you an important lesson, which is that you should be grateful for what you have. Even though you didn't get pizza, you still were able to eat the food that they provided, which isn't an option for everyone.
My parents are uptight assholes for making me eat what they were cooking.
I think they were good parents, who taught you a valuable lesson. You should know as an adult that you can't get everything you want.