I was really quite surprised with this movie- didn't think it was going to be this good. I think to really understand this movie you have to look quite carefully at Travis- I think two things really drove him to do what he did in the end...first of all he is of course fed up with the grittiness and grim of society...and then I also think the extent to of which he experienced loneliness was also very, very obvious. He's searching for love in all the wrong places...and doesn't know why.