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.
The writer’s challenge is to find the universal in the particular.
Wages depend on the price of necessaries required for the support of the laborer.
All things are possible until they are proved impossible and even the impossible may only be so, as of now.