[garbowza]

It seems that most people aren't concerned with environmental description per se, but rather how that destruction might affect their own lives. So really it's just self preservation and self interest, which isn't much different from other animals.

[nazgulnarsil]

right, but raising another sentient being in terrible conditions just to slaughter and eat it might be considered a universal bad.

say an alien civilization comes along and is as far beyond us as we are beyond cows. I think we'd raise some objections if they started eating us, even though it is logically sound.