I was in that situation this time last year. I was climbing the walls. The company was going under alot of restructering, and alot of people that had been with the company from day 1 left. When these people left, the atmosphere at work changed for the worse. I was the only person left in my department after 4 years, although I had another person on secondment working with me...she was driving me demented.
Anyway to cut a long story short, I was offered voluntary redundancy. I took it and left. Looking back it was the best decision I ever made. I am a job now that is a little different to what I am qualified for, but it will keep me ticking over untill I find something more suitable.
I've overheard your theory
"Nostalgia's for geeks"