Lisp Questions

So I have some questions about lisp. I've been learning programming but I hear some conflicting information so I need some things cleared up.

First of all, I keep hearing that the ability to wrote code others can read is huge, but since lisp is incredibly hard to read, wouldn't that make lisp programmers inherently bad programmers?

Also, can someone post some non-trivial lisp code? Every time I see someone post lisp code it's always something very short and trivial. Is it possible to write anything real with lisp?

>>40
Some error will exist anyways when dealing with functions that were originally meant to have real outputs. There's no way you're going to store the output or something like the square root of 2 in a rational without there being some error, no matter what precision ("infinite" precision would give you the actual number, but it won't be a rational anymore, nor would you be able to compute it in full as the process would be non-halting).