ThomPete, Sure these aren't necessarily applicable to ALL people, but you asked "such as?" to "Um, there are reasons other than laziness." I gave you at least

ThomPete, Sure these aren't necessarily applicable to ALL people, but you asked "such as?" to "Um, there are reasons other than laziness." I gave you at least 2 specifics such as. There are plenty of laziness reasons, but doesn't mean there aren't potential valid reasons besides laziness. I also generalized the "Various forms of disabilities, injuries, other conditions that walking isn't great for." in the beginning. And there are literally tens of millions of Americans that have at least 1 disability (approximately 20 percent of the US population). And lots of other countries like Japan has an aging population which are likely to have various mobility issues. Not including injuries, or potentially other issues. So I would say that is fairly generalizable.