I think you have a point that we just have to get used to this. Personally we either deal with the crowds, like we did recently in the Cinque Terre, or avoid these places. Places are crowded now because more people are traveling and that is probably because travel is cheaper. Also as large countries like China become more affluent, they start to travel. We don't want to go back to 50 or more years ago when only the wealthy could travel.Crowds are crowds, travel is on the rise, and old cities are just that.