For Westerners like my husband, it always amazes them to see people dozing off in the most uncomfortable and noisiest places.
This is not a big surprise for me because in my country, most people also have no trouble sleeping… anywhere. In PUJs, bus terminals, airports, waiting sheds, etc. You name it. Although this might come off as very unbecoming to some, for me it’s just to show that the person (sleeping) is comfortable with his surroundings (other than he is just plain drunk) and I honestly don’t have a problem with that just as long as the person (sleeping) is not leaning on me.