Im taking the old advice of "do what you love". maybe its not a mechanic, but im 90% sure its not a mechanical engineer. I'd rather be a mechanic is some kind of performance shop or something. I'd honestly rather have all the bad things of a mechanic then sit at a desk and do equations for things ill never get to put together. I'd really like to do something hands on and this was the first thing that came to my mind.
And bill I do have a good idea of what you're talking about. I've worked on my car a good bit and its not the most comfortable thing ever. But id rather be out there doing that then doing my engineering homework.