This is literally just your opinion of a several centuries old city based on a day trip. The epitome of superficiality. Even if your unfounded assumption that

This is literally just your opinion of a several centuries old city based on a day trip. The epitome of superficiality. Even if your unfounded assumption that "the only people who sleep there are tourists" was true, you don't let a symbol of western civilization sink. Do we let the Colosseum fall? Does someone live in there? What was your reaction when Notre-Dame was burning? Should we care at all about preserving memory? Are these just stones? While I must admit that is hard to see beyond fake Carnevale masks and other trinkets, I am afraid that in your trip you failed to perceive the greatness of the place you were visiting.