Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot.
Literature is a false representation of life that nevertheless helps us to understand life better, to orient ourselves in the labyrinth where we are born, pass, and die.
The desires, and other passions of man, in themselves, are in his own power; his real difficulties are, to know when they are to be controlled, and when not.