Killing is something that occurs in the natural world. Ever see a lion kill a wildebeest? It's eaten alive and I'm quite sure that isn't fun for it. Seen orcas play with seals before they eat them? Or just eat the tongue of a whale and leave the scraps for the 'commoner sharks'?
Firstly, I am shocked that I am on a forum for divers - wow. Secondly how on earth can you compare a lion killing a wildebeest to the horrors happening out on the seas. For a start a lion MUST kill to survive or it will die - simple fact. The mouths of the Japanese or any person eating whale meat do not require it to survive - is there not already enough choice on this planet in terms of food that we have to tap an already taxed source!!
Thirdly, I hate this pathetic argument about culture, years ago people armed themselves with a simple harpoon and a rowing/sailing vessel, where the numbers of whales were quite sustainable and most probably a requirement for life in terms of oil and food! Compare this to highly advanced ships with GPS and horribly powerful and accurate harpoons - this no longer makes it a hunt, it turns it into a slaughter.
Whaling is wrong, there is no other way to look at it, I don't care if someone's great great great granddad was doing it 200 years ago, we were doing all sorts of things back then (slavery being one), but thankfully we saw the light and stopped. Cannibalism was considered an acceptable form of food in many cultures, how would you feel if people were still serving up others on a plate?