Was software engineerer for 10 years. Good money, interesting but senseless work. Remember this one evening in the stable: I had the strong feeling, I did something more useful with feeding the horses and sweeping the alley than during the entire week programming dumb applications for a lifeless insurance.
Thus I registered at university and studied biology. Finishing my PhD in pharmacogenetics (clinical cancer research) now. I'm sure I'll never again earn as much as when I quit the SW engineerer job but now I think I'm doing something useful