I'm going to let my disabled father pay for my phone
Why should your father pay for you?
I want to prove a point and to make him feel bad for being a burden in our family.
You should pay for things yourself. You shouldn't take advantage of your father like that.
Nah, you're being too kind. He needs to learn.
Parents spend a lot of money to raise us, so at some point you need to grow up and pay for your own things. It would be good for you to learn to be more responsible.