Tigers also lick their own bums clean, is that a good thing to do? Tigers don't have dentists, so humans have no right to dentistry.

Or maybe you mean to say that hurting other people for your own pleasure is only ok if you do it close enough to see the whites of their eyes? Does a single tear need to roll down your cheek.

You are so stupid it actually hurts me. If you want to argue about the morality of killing you could at least pretend you have read a book.