My bad regarding whales then. But still, I believe whalers don't "use" the whole whale, right? It used to be blubber, not sure what it is now.
Dude, living in this beautiful and multi-cultural world is a great blessing, but you have to offend someone's culture eventually. There is simply no way to satisfy everyone, which is why this whole PC movement is silly imo.
Yes, that's basically it: you may think no animals should be killed, while I think that some should be killed. But the "winner" is the one who convinces the most people by providing the most compelling arguments.
As it stands, the majority agrees that cows and pigs must die to feed humans. They also agree that sharks should not be killed for their fins, elephants should not be killed for their tusks, etc.
Now, we may end up being wrong about cows and pigs (unlikely, given history and research), but this will appear over time rather than overnight.