First off, if you don't care, then I won't convince you. If you don't think you should care, stop reading and carry on. I'm not trying to preach or convert anyone.
Just posing some questions.
For those that are disgusted or bothered with the slaughter and use of animals for food, why not do something about it? Watching videos is great, but will it change anything?
Nobody in an industrialized, wealthy country has to participate in this. Choices abound.
As for adopting an animal-free diet, why not try it? What could it hurt?
For those that say you "never could", you can still do the best you can, no? Why not? If this is something you care about, it's better than nothing. Under these circumstances, is it a matter of can't or a matter of won't? There's a big difference.
As for the idea of "life living on life", great! Animal Planet! Survival of the Fittest! Hurray for the wild kingdom!
Grizzlies eat salmon because it's WHAT THEY DO. Spiders eat flies because of they didn't, they'd starve. It's WHAT THEY DO. If eating meat/animal products is WHAT HUMANS DO, I should be dead right now.
As a human, I have a CHOICE as to whether I want to participate in the meat production systems humans have created.
Think about it.