Food, Inc Reflection

the movie showed how often people eat meats and how they are made.
but some of part was disgusting while people kill chickens,porks and cows.
i didn't know that the meats what we usually eat, are made by that way.
i feel i should eat less than before, thats the way to not kill animals less.
and feel people are so cruel. they do that only for money, is there any other way to kill or raise them in better environment? im wondering.
i feel pathetic to them.