A) By your logic, my pocket watch is the most innocent being in the world.
IT KNOWS NO EVIL.
No, not having a capacity for moral reasoning doesn't make an animal "innocent". It makes them "less than human". In the same way that a lion is "less than human" because they have no restraint in goring small children. In the same way that ants are "less than human" because they scatter all over your food and fuck picnics up. Dogs aren't "innocent"; they're just dumb.
Moral backbone comes from one's conscious decision to do no harm. An animal would never be capable of that to great extent.
B) That being the case, I have no respect for animals.
...Yep. Deal with it.
C) If you can't forgive a person after he's tried to turn a new leaf, then you're part of the problem.
Not that Michael Vick has necessarily done so, but saying that anything is completely beyond and sort of redemption is ridiculous.
D) Even moreso if they're just dogfighting.
Look, dogs are just animals, okay? Cows are delicious, chickens are too, and if you hunt, animals are already suffering for your amusement. The difference between animals suffering for your amusement and animals suffering for your taste buds is so arbitrary that I couldn't care less. In the end, they're just animals.
Now, putting aside animal rights, much could be said about a man that revels in this kind of violence, but hey, he's a professional athlete.
E) The fact that so many fans are voting for him shows that there are many people that would, in fact, like to see him on the cover.
Not so much "ruining their reputation" as much "having good marketing".
F) A Wild Growlithe Appeared!
GO! HOUNDOOM! I choose you!