Client do not call you to solve their problems, they call you to implement their brain damaged "solution" to what they think is their problem. If they did the same with the plumber, their houses woud be wetter than the ocean.
Do NOT think you can get satisfaction from customer tasks, they are ONLY to pay the bills. If you want to create something significant, start or join an open source project of your liking.
Bye... from the trenches.