Most things are actually delicious when cooked well. Alligator? Stingray? Guinea pig? Cow tongue? The heart of nearly any creature? All of them are better than chicken
We eat things not because they're delicious, but because they're convenient and reasonably delicious. Snail used to be a delicacy... They don't eat it in France much anymore because they're not convenient anyone
IIRC snail was originally a survival food. I guess over time people kept refining the preparation process and accompaniments until it became a delicacy (indeed, probably because it's very far from being a convenient dish to make).
Source : am french. I ate snails yesterday for Christmas Eve's dinner, actually.
We still do eat them. Well at least I assume some people do as I can't stand it. But you still find frozen snails in pretty much every supermarket around where I live.