The objections are ridiculous.
Not only would this be more humane, but it would be safer... for us. It would eliminate lossage by allowing more precise targeting of meat maturity.
And best of all, if we really got it cooking, we could have tons of inexpensive and tasty meat.
I mean, we have that anyway, but it's inaccessible until the laws on cannibalism are changed. Eat the weak!