I'm 34 and thinking about it, I got my first bike (solid tyred, with stabilisers - training wheels) at 3 and owned a bike of various types all the way up until I was 24 when my first MTB was stolen I used to use them on lots of short distances and for transport, I didn't learn to drive until I was 24 either.

I bought another MTB three years after the first was stolen and really got into riding for fun, so I've only really been without a bike for a total of about 6 years of my whole life.