I'll be downvoted into oblivion for saying this but there are lots of ways that the average vegetarian or vegan every day supports killing animals for their own personal benefit. Animals are killed every day so that we can live a better life. It's not a big deal. Get over it or get off the grid.
I hope you don't drive on roads, or use anything produced by the petrochemical industry.
Hell, somewhere between your computer and HN a switch, server or piece of critical infrastructure is powered by burning dead animals. Or perhaps, it's just the plastic sheath on your ethernet cable that was made from petrochemicals.
I hope you're seriously considering refraining from using the internet because of the animals that were killed to make it.
Also, have you EVER considered how many field animals die to produce vegetables? You think a combine cares if there is a mouse in the way? Now, lets say you rely on a good shipped by trucking, train or ship, well then odds are somewhere along the line something was diesel powered, as we all know most diesel comes from oil fields, oil to the best of our knowledge contains dead animals.
If you're living you're consuming dead animals. Stop feeling bad about it and start enjoying the taste of meat. They died so you can live. It's the way of life, you think a tiger ponders the morality of eating a human?
Not eating meat is basically the sorriest excuse for making a difference I've seen, it's basically on par with believing recycling makes a difference. It's a small step to take with the aim of moralizing to everyone else how big of a difference you're making. Also, how many animals had to die because of habitat loss to make that nice house you're living in?
Meat may be murder, but so what? Pay soldiers to kill the animals then they are just casualties and it's no longer murder. We can now say the animal died in combat.