When I worked the odd hour or two at our local bike shop, may it RIP, I was always amazed at the mis-sizing of bikes that people came in on, often looking for a new saddle or handlebar because they just weren't comfortable on their bike. When truth be told, they were two sizes off and nothing could be done to make it comfortable. What's really bad is when it was a new bike purchase and you just know that the bike shop sold the person what they had on the floor and wanted so badly to get rid of it, a very myopic view imo, making that sale today but will never see the person again because they won't continue to ride.