Employment is voluntary, it probably said so in some legal form when you accepted the job.
There is something that keeps you coming back to this job day in, day out. I worked nightshift at Walmart for 2.5yrs. It sucked. I didn't like it when it was just a temporary holiday job. I didn't like it after they offered to make me a regular full-time employee. I didn't like it after they gave me a pay increase once I was in a slightly higher position. The work was lousy, boring, and exhausting (stocking, pulling heavy pallets, unloading trucks, basically anything that was needed), and I hated how customers always treated the employees like trash. One of the maintenance guys quit after some idiot college kid took a dump on the salesfloor, and he had to clean it up. (Yes, seriously.)
But I kept going back because I chose to. I could have found another job in the same pay range, but at Walmart, I knew what I had to deal with. Management wasn't too bad, in fact most of them seemed to like me; they gave me the hours I wanted and a regular schedule, I got two 15 minute breaks and a 1hr lunch, and the work wasn't really all that fast paced.
I then worked a summer job at a warehouse after one year in college. THAT sucked. There were only two 30 minute breaks for a full shift, there was no climate control (a temp of 110-120F is not fun), very few people there spoke understandable English, it was fast-paced, and dirty. That, and Walmart, are what I have to keep me at least partly motivated to put up with the different stressors I encounter in college.
Before Walmart, I was at a community college, and I worked at K-mart as a cashier. It's a wearing job. Cashiers get customers at possibly the worst time of their shopping trip - all that stands between them and freedom is one cashier. Such a person is not like a worker on the salesfloor, who might be there to expedite the shopping experience, the cashier is just a speed bump. The customer may be getting tired too from being out all day, possibly shopping after work.
The constant flow of impatience and irateness can erode morale very quickly. You are in a similar position, I imagine. The customers have gotten worked up and frustrated to the point that they need outside help, and you are the first target, a personification of their problem.
But who knows, you may encounter different forms of stress in the Air Force than you are accustomed to. Hopefully you put considerable thought into the Air Force, as opposed to doing it rashly. Hopefully it works out better for you than your current job did.