What does "despair of" mean in this paragraph? Does the main character not like solving those problems, do they overwhelm him?
He received an undergraduate degree in applied mathematics and computer science at Cal Poly and his master’s in pure mathematics at UC Davis. Pure math was, to him, the Special Forces of the mind—he took it because it was so hard, and he wanted to find out just how smart he was. He was pretty smart, as it turned out, but he despaired of working on problems that existed on the level of pure abstraction and had no bearing on the problems of the world.