I left EMS and became an air traffic controller. The paycheck just wasn't good enough in EMS. I chose ATC because I wanted to do something that's high-pressure, and in that regard, at least, it blows anything in EMS out of the water. There is some inner pride, too, from doing a job that some just can't.
Unfortunately I work in a tower, but I prefer TRACON. Something about moving airplanes and chucking strips in a busy TRACON environment reminds me of knocking out calls left and right in a busy EMS system.
Pay is unfathomably better than EMS. Schedule often gets tiring, tho.