I worked as an assistant plumber one summer during college. I needed a job and my friend knew a guy.
It sucked. It was unexpectedly back-breaking work. (Granted this was for mostly new construction and not just fixing problems.) It was hot, and often smelled like urine since roofers would piss in the sump hole of unfinished units. The guy I worked for seemed to hate life and looked like a catcher's mitt from being out in the sun so much.
Though I enjoyed the physical challenge, that summer I really learned the value of getting an education. That said, if you hate IT, I'd suggest trying a few different things before jumping headlong into a craft you're not entirely sure about.