We spend too much time at it to call it "just a job". Sure, I've been there ... close to burning out, hating going to work, wanting nothing to do with co-workers. But this is my life, and it's the only one I got. Life is to short to have a job that is "just a job".
Many probably can't just walk out of their "just a job" right now - they have obligations to their boss, they have to feed their family, etc. But the goal should be to work to change it, and make their jobs more than "just a job".