So you're saying it might be moral to eat the unemployed? They don't pay time or money to anyone, yet they still receive some basic level of access to infrastructure. They take more than they give, and that means killing them and eating them could be a viable way to make up the difference.

That's before you get into the fact that we don't give animals a choice in the matter. They can't opt out of our protection and their eventual slaughter. We presume that it's acceptable to agree to that bargain on their behalf.

Like I said, it's a thought experiment, but it's one that leaves me uneasy with the consequences.