Are you just trolling at this point? Do you even understand what you're saying about causality? Are we debating semantics?
Edit: this is like saying you have zero ethical qualms with somebody hiring an assassin to kill somebody. Yeah, the assassin ultimately does the deed, but you're still paying for it. If you had not hired the assassin, the person would not have died -- looks like cause and effect to me.
Similarly, you should understand that if you choose to eat meat, that benefits the meat industry and more animals will die as a result. Put aside your definition of "cause" for a moment -- you must agree with me that this is true right?