Rotterdam, Vienna, Prague, Warsaw, Vienna, Milan, Frankfurt, Oslo and many other European cities with skyscrapers would like to have a word with you. Romania is skyscraper crazy. I was rather surprised by that when I went there. I was always under the impression they were too poor for such things, but I was wrong. They may be trying to catch up with France as they are the European country with the most very tall buildings/skyscrapers. They have a very long way to go if that's their goal, though.
Also, the first response is indeed correct in that many of our cities have buildings that are many centuries old. We're not about to start eviscerating our cultural history and rich architecture spanning many centuries and styles to add more big buildings. When you go to somewhere like Bergen, Norway or Porvoo, Finland, you can see tall buildings while standing in an area full of buildings constructed during medieval times and that still have people living in them. We're quite fond of those, you know.