Those people are not open for the trueth, because the trueth would tell them to change and they can't handle the guilt of the damage they've done... So they keep doing things to feel guilty about. Pure. Ignorence.
haha! the excuse 'because we used to' we used to use humans as slaves also. Meat eaters have no real reasons, only make excuses as seeing a vegan is a reflection of themselves because they know its horrid to eat animals!