This is interesting - thanks for posting. On the one hand, people need to learn some basic traveling common sense. However, I can sympathize with the mismatched expectations of first time travelers. When I arrived in London in 1999 for a semester long stay it was very different from what I expected. It was polluted and loud, the people were definitely not friendly, the neo-nazi's bombed 4 neighborhoods between March and May, tensions in minority communities were high due to the bombings and the war in Kosovo (and I was staying in a predominantly Iraqi neighborhood), there were more homeless people than I've ever seen, and it was ridiculously expensive. Had I only been there for 4-5 days I would not have been able to change the narrative from "this place sucks". Having the good fortune to stay for months and work with Londoners in a really interesting job I was able to unpack a lot of what I was seeing and realize that there was so much to learn about the world and much perspective to be gained. On my last week at work my English coworkers took me to the dog track, which was by far my favorite London experience of my four months there. If you had told me that 6 months prior I would not have believed it.
I have since become an avid consumer of English history, music, books, movies, etc. and really embraced the complexities of what I observed that year (as a 20 year old). That said, I have not since returned to England, nor do I have much interest to, but the perspective I gained has been a springboard to extensive travels since.
-Matt