The only time in my life i was satisified with my job was at the start of my career when I spent a couple of years at CERN, there was a lot of freedom to try new things and technologies, you could generate great imapct and the people around was very nice.
That's a little bit sad, but understandable at the same time. I can't imagine working at some place like CERN, especially early in your career when you're just excited to be a part of things. That's a tough act to follow.