Should I get my old job back?

I had this job for 11 months last year, it was well paying, I had to work a ton of overtime, late into the night some nights. A manager made one mistake, he got up in a meeting and said "we're going to hire some real help, an ace to help in your department". Then when it came down to doing it they hired a guy who couldn't do anything, just a fat, ugly, idiot who talked incessantly and made creepy noises to himself all day long. Oh, right, and he was a fishing buddy of another lazy guy who kisses up to management. I take my position a bit seriously, and I can deal with managers saying kinds of dumb things, because they are only human, but this was too much for me to handle and I walked out. My direct manager was really extra impatient and had a short fuse about my work because of it, he's a jerk. I felt like I was going to have a heart attack if I stayed.

Anyway, I didn't love my job, but I was good at it. They actually fired the guy that didn't work out, so I wouldn't have that bothering me if I went back. On the other hand I could sit around the house or just do nothing for a few months, since I have some money saved up. The industry I am in has about another 5 years of steady work to do before it slows down.

I dunno, I just have motivation issues. I don't want to get out of bed, and am mildly depressed. I don't date much, I'm 30 and worry about all the cute guys being off the market. That's part of the reason I couldn't handle being stuck in a room with that ugly old guy they hired. I just felt like it was being rubbed in my face that I have nothing much to look forward to in life.