They do it every year because the Japanese Govt subsidises the whole shebang, fuel and wages for crew and artificially low prices in stores for a product that fewer and fewer people eat, only Japanese over 50 yo will touch the stuff.
Of course Japan has a large population of older people so politically the whole thing flies but in the long term....
Did you know that the Japanese even buy Whale meat from Iceland?
Few in Iceland will eat the stuff either with it's rank sour tang but the Japanese Govt buys Icelandic product and -once again-offers it for sale @ subsidised prices in Japanese supermarkets.
There was even a Govt programme where Whale meat was served to kids in schools for lunch but that collapsed because kids hated the stuff I know a woman here in Vancouver who remembers it on the menu.
You have No Clue-there are more Whales now than there have been for decades so many Humpbacks and Greys that disposing of their carcasses is becoming a problem.
Hey, cockbreath, here's an "opinion" from a biologist, who probably has 'no clue' either, according to you.:
The Future of Whaling - The O.L.S. Buzz Blog | Nature Publishing Group
Here's some more for you, mouthbreather. It's long. Try not to drool on the keyboard or move your lips whilst reading"
http://www.nefsc.noaa.gov/TREE.pdf