Solving problems, even in the short term, even theoretically, is quite satisfying. I mean, when you have a solution, something that can reasonably be implemented, you know it's a fixable problem. You would not believe the issues that escalate to the $1 million or even $10 million level. One in particular for me was so simple, yet as it was above my pay grade and out of my department so no one listened to me. Knowing a problem can be solved is such a nice feeling.