I sold my car 5/30 and haven't gotten around to replacing it yet, so I use my bike for transportation as well as recreation and fitness and my main social outlet/inlet. My addiction is a 100+ mile/week habit, with short and extended binges; my tally hit around 4200 at the end of the month. (I live in a very good place for cycling - lots of long, flat roads and not a lot of traffic.)