seat hoarders

are people so scared of talking to people they don't know that they are willing to sit on the front row of the movie theatre rather than asking someone to scoot down one seat? i think it's crazy that people always have to put at least one seat between them and the person next to them, although i do it too. "this seat is taken...by my purse". at least when i see that the movie is pretty full or that people are having a hard time finding seats together, i give up the ghost seat. i think it's ridiculous when the hoarders get so irritated when someone who actually paid for the seat asks for it. if you don't want an actual person sitting next to you...buy an extra seat!!!