We have 2 kids, both moved away from home and now back (hopefully temporary). Growing up our kids have had bikes to ride the neighborhood. As they grew older they were introduced to single track mountain biking including trips to Whistler and Sun Peaks. We also spent a couple of our summer vacations doing self supported bike tours of the west coast gulf islands. 8 years later neither of our kids even own a bike, or want to own a bike. I'm waiting for them to "grow up" and rediscover the joy of cycling - it'll happen, I just have to be patient.