The back stabbing and hostile personalities. Toxic place I was at for 17 years but I do miss the income!
Not all of them were like that, but that's one reason I refused to be a part of the Xmas social. Besides, I always liked to keep my work life and associates separate from my social/home/personal life. The only time I ever became involved with a work associate was when I defended a blind guy against a group of apprentices... and almost got fired because one happened to be the boss's son.
One thing I would miss about work is all the sexual harrassment.
Now there's another thing I don't miss!!! It's one thing I did try offering around, but none of the ladies ever wanted any.
And in those days I was such an Adonis, too. 