Why should debt be forgiven??
Why should anything be forgiven? Why should there be bankruptcy instead of debtor's prison?
It spits in the face of those who took out loans and payed it back over time in good faith.
That depends on what kind of a person he is. If he's loving and empathetic, values education in others, and wishes to facilitate its spread, he won't feel that way.
You're describing the bitter resentment that characterizes the growing class of selfish Americans, people who think only of themselves. If debt forgiveness doesn't benefit them, they are opposed to it and resent others getting it, even if they don't pay taxes to help underwrite it.
Who remembers Goofus and Gallant, a morality teaching cartoon seen in Highlights for Kids magazines? Here are a couple of typical cartoons, with Goofus on the left:
Not surprisingly, Goofus resents debt forgiveness as much as he resents his brother or somebody getting an extra apple, whereas Gallant is the opposite in every respect.
Are doctor degrees going to now be among the free choices?
Why not? Apart from providing society with an essential service, doctors will pay a lot more in taxes over a career than may others costing just as much to educate. The government will get its investment back in spades.