I'm 31 and don't drive. When I reached the age of potentially learning to drive, it was either pay for driving lessons or save the cash to go to university.
I chose the latter. Obviously, didn't have the cash to learn to drive while at Uni, then after Uni I got heavily involved in supervising a nightclub and barely saw daylight for 2years.
Since then, every job I've had has been in the same town/city I lived in, and within 30mins walking. So I used the money I would've spent learning to drive, on travelling extensively and if I'm honest, if I had to choose between owning a nice car and the amazing experiences I've had worldwide, there's no choice really.
I'm not a 'material possessions' person in the slightest so I don't miss not owning a car. Sure, it would make my life a little easier but so far, it's been an unnecessary financial burden that I've always avoided.
I'll drive one day, but not until I've finished exploring the world and finally settle on a city/town I actually want to live in indefinitely.