I'm also 28 and abstained from having a driver's license until I was 24 for many of the same reasons. I hitch-hiked, ride-shared and primarily bicycled everywhere. I eventually caved because I realized life was short, and the amount of time and energy i was spending trying to get places using others' energy could be more efficient if I relied on myself a bit more

There's still something to be said for mindfulness. I admire your commitment