I was going to give you a face punch and say, "yes, you are nuts. STFU, suck it up, take the money and live with the job" but that's not overly helpful, despite it being my first reaction.
The grass isn't greener on the other side of the fence; the grass is greener where you water it.
FIND A WAY to enjoy your job.
Enjoy that you don't have to work 100 hour work weeks for your six figure salary. Find some way of enjoying your coworkers. If they're truly disagreeable human beings (possible but unlikely) find a way to try to improve them. You get out what you put in.
Enjoy air-conditioning in summer, heating in winter; many people work in appalling conditions outdoors, year round, for a fraction of what you're making.
The job doesn't have to be difficult. Enjoy that you're good at it, which makes the job easy for you.
I agree with others: take a sabbatical. Gain some perspective. Others have also suggested volunteering with impoverished groups and I agree. Change your perspective before changing jobs/careers or you'll end up back at square one with your new one, making half as much money, in conditions twice as bad, even if it takes a few years for the honeymoon of "new" to wear off.