Yes. I have lost height with age. But even more important is the loss of ability to kick my leg over the level top bar of the frame. I was on a cross country tour with a road bike that I rode around town as a daily rider. I found on tour that I was weaker and my foot would hang up on the top bar when I tried to get on my bike, causing me and the loaded road bicycle to stumble around and fall over on to the asphalt in the highway TRAFFIC LANE, which obviously put me and vehicle drivers in danger. This happened 3 times, and after I made it to a town where there was a interstate bus station I had to abandon my bicycle in a motel, cancel my tour and return home on the bus. I now will not buy a bike with a level top bar frame. I only buy and ride a bicycle with a sloping top bar that I can SAFELY throw my leg over.