IMO, there's no way to treat animals humanely while also killing them to eat them just for their taste, there are perfectly good replacements for all the nutrients you can argue meat provides.

Even in "Humane" Farms there is sexual violation and exploitation (via forced insemination), separation of mothers from their babies, routine mutilations (debeaking, castration, dehorning) and many other things that disregard the animal's instincts and preferences.

Sorry for the rant.