I don't have an ethical objection to killing animals for food. I'd rather they had a pleasant healthy life and that their death was not needlessly unpleasant but I'm okay as long as that's broadly true.

And I worry for the vast population of food animals if we ever decide we don't want them.

When I think about it cold-bloodedly I don't have an ethical objection to eating vat grown human but as someelse put it, it fails an ick! test.

The manufacturers seem to be getting a beef burger type meet for about twice the cost of traditional farming and falling so they might be able to trade energy intensity for other cost reductions enough to get to about the same cost.

At which point I'd happily shift to eating vat grown swan, alpaca and dormouse.