Not to mention
safe urban areas. Most US urban areas are relatively high crime, and even if you don't encounter actual crime you are made to feel unsafe by a bunch of drug addicts in hoodies who yell racial slurs and other creepy dudes who approach you unsolicited, in contrast to urban areas of e.g. East Asia which tend to be extremely safe.
Boston is about the only city in the US that I feel mildly safe walking around the downtown at night.