A bit of both. People at retirement age now have ridden considerably more as adults than their parents. There are a gob of older folks getting in to it seriously for the first time since they were kids. Health and enjoyment seem to top the list. Some have become a bit energy conscious and cost savings figure in as well. Some also say that they think it's safer for them to ride bicycles to their morning coffee klatch than to drive. Any way you look at it, it's good to see them out there.