The world is made up by individuals, so if everyone was living by your philosophy, Zeldy, there woud be no vegetarians at all.

It isn't only about that one individual being able to do something for the animals, it's about living according to your own values, convictions and conscious. In addition, there is the influence you can make on other people by taking such a stand.

There are quite a few vegetarians in the world, actually, and if you put together how many animals they would've eaten had they been meat eaters, you will see that they do make a difference.