Only the more expensive hotels in the United States have porters. The Courtyard Marriott in Gettysburg, PA doesn't send a uniformed porter to get your bags. As far as porters in hotels in Sweden, most of the luxury hotels do (at least in Stockholm.) Trying to turn this into an "American superiority complex" thing is completely silly. Visit any major city in the world and nearly any full-service hotel in the world and there will be porters -- and it isn't just for the American tourists. I happen to like the Swedes and Sweden, however I hardly consider their culture any more superior than any other. All cultures have value and generalizations of any culture are pretty ridiculous.