I got mine at 24.

My parents flat refused to allow me to get a driver's license, I assume because it would have given me the freedom to leave their house under my own power. I didn't end up getting one until after I went to and came back from college.

I learned from a driving school, since my parents seemed uninterested in teaching me.

The experience of trying to hold a job or get to and from class between the ages of 18-24 is one of the primary experiences driving me to the idea that American public transportation sucks absolute asshole and desperately needs improvement. It used to take me two and a half hours to get to work. My work was a 15 minute drive from my house, but since my wonderful father refused to drive me to and from work, I would have to take a bus all the way across town to the central station and then hop another bus to take me all the way back across town to damn near the same place I got picked up at.