Taking the unconventional path

Two weeks ago I quit my job. I had been working as a staff engineer at this startup for the last 2.5 years. The people, pay, and workload were all good but it was time to move on. I have worked with most of the team before this job and I am sure we will probably end up working together again in the future. So why quit? To be honest, I can't 100% rule out a midlife crisis. I turn 40 next year and…