Dictionary does a pretty good job. "Not Needed. Unnecessary."
There's a pretty valid point to be made that you don't NEED to eat whale meat. Or Cow meat. Or any meat really. There are economically available options in most areas that would allow for a nutritionally balanced, vegetarian (possibly vegan) diet.
This is specifically true about a developed nation like Japan.
There's counterpoints to be made (not all farm land is suitable for crop farming, so using it for husbandry is valuable; a complete one day flip without a slow phase out of meat would be economically devastating; freedom to eat animals is my right, etc) but you can't really say you NEED to do it. Science and nutrition doesn't back that up, and the economics are hazy at best.
>There's a pretty valid point to be made that you don't NEED to eat whale meat. Or Cow meat. Or any meat really. There are economically available options in most areas that would allow for a nutritionally balanced, vegetarian (possibly vegan) diet.
With that sense of "need" you also don't need to be on HN, or on the internet. Heck, you don't need clothes if you live in a warm climate, and neither do you need 99% of your processions (and surely not in that quality).
If by "need", you mean "need to survive", you could survive your entire life just by drinking human milk. By not eating plants, you'd be improving animal welfare even more, since agriculture kills many more animals than grazing-based animal husbandry (think all the pests that are eliminated: the rodents, insects, etc.)
