I'm a bit of a cartography geek and a I'm a computer engineer doing programming, network engineering, and project management for my "real job". In the end, editing maps isn't much different I guess -- I'm still using computers to get remote end points to connect in efficient ways while dealing with release schedules and bugs
Although I don't have a daily commute for work anymore, I love to drive and I still manage around 15,000 miles per year on the road even without a daily commute. (My wife has to travel for work so I usually go with her which means at least one week a month on the road.)
I grew up in NYC, Central Jersey, and North Jersey -- areas well known for traffic and poor signs. Since I still go back there a few times a year, I have a selfish desire for routing to work correctly
I may not be able to cure cancer or create world peace, but if I can make people's time on the road a little less stressful, I feel that I have helped people.