Yeah, listen to me and Bipper here. I, at least, have taken biology and botany classes. (I hated them with a passion, but I did have them). I still haven't heard anyone point out why it matters that animals and plants feel pain. I get to sleep perfectly well and comfy, even knowing that I am responsible for the ending of a dozen or so lives in my quest to continue my own metabolism. Not including the millions of incidental or accidental ones involving microbes and small things I step on.
