I dont think you can preach about the planet if you infact contribute to an industry which is well documented to have a devestating impact on the planet. Free range/Red tractor etc mean nothing. Its not about how they are killed, its THAT they are killed
Straying off-topic here, but if we stopped farming for meat, what would happen to the land that isn't good enough for growing crops but is fine as pasture? Imo, most of it would be abandoned and revert to scrub or built on, which would also lead loss of species.
Chalk downland (which is what I know most about, as that's what we have in my area) has been created, in part, by being grazed. To lose that habitat to scrub would mean the loss of the bee orchid and chalkhill blue and Adonis butterflies, and probably skylarks as well.
I'm sure there are other species that are indigenous to upland pasture.
And if we were all to give up meat, wouldn't we have to import more stuff like beans and pulses to make up for it?
I think eating meat that is outdoor reared and sustainably farmed is no bad thing, tbh. And it keeps my food miles down, as most of the meat I buy comes from the farmer whose land starts a 10 minute walk from my house.