What don't we eat anything which is edible?

[clairobscur]

@Ravenman

As others have said, we don’t have that much problem with food scarcity in the US. So, like little children, we can be finicky about what we eat. Other parts of the world which are not so blessed with the abundance of Midwest wheat fields, Texas beef, and California vegetables are less picky than we, and indeed come to embrace many foods that we’d find yucky.

My question wasn’t really refering to affluent countries. I can understand that contemporary american people won’t begin to try eating things they find unappealing. But rather why middle-age europeans didn’t, like the chinese you mentionned, ate “everything which has legs” (or not, actually)? Which would probably have resulted in these food being part of the european, and as a consequence, of the american culinar tradition.