Thanks for the compliment, I like to think I'm a good guy myself
But I think that whether or not I need to club seals in order to make a living/provide for my family. Thankfully, I'm not in the position to need to, but if I were, I wouldn't have a problem with it.
I have killed animals by crushing their skulls many times. They didn't seem to suffer as much as animals I have seen killed by other methods. Disruption of brain tissue acts quickly. When you get right down to it, if you've made the choice to kill, clubbing when done properly isn't cruel at all IMO. Its all about mechanics, physiology, and the right tool.
Of course, all that's based on logic. If you allow emotion to cloud your thought process, you may make unreasonable judgments about other's ethics. Make your own decisions based on feelings if you so choose, but is it fair to impose those feelings on others?