I know that tourism is good for the economy and that many communities around the world rely heavily on tourism. When possible we try to travel in the off season to avoid large crowds. There are times, however, when that is not possible. One time was the summer our son got married in Italy.
I loved Italy but we did avoid some areas because of the heavy foot traffic from tourists. Most of the places we visited were very popular and the crowds were unavoidable. Two of those places were Venice and Rome. Despite the large number of tourists, we thoroughly enjoyed both cities.