One person, not eating one meat meal, doesn't really shift the needle.

One person, spending entire rest of their life, not eating any of the meat meals they otherwise would have, does in fact add up to several animals worth of meat.

Ten people, spending the entire rest of their lives, not eating any of the meat meals they otherwise would have, is a massive number of meat animals, for which the demand will not exist, and which will not therefore be raised.

There are a lot more than ten vegans.

While I'm not, I respect those that can.

Your bitterness that prevents you from ever having to consider if you have made a moral error is not serving you in your day to day morality, and it will eat into other areas of your personhood. I suggest to you that the emotional hit for acknowledging that yes, choosing not to eat meat is fine actually, and it does do some good, or, in the equally true but differently perspectived stance, you choosing to eat meat is hurting animals. Price the morality into your meat. You're still paying it if you ignore it, but the cost is in being a tolerable person who people want to be around.