They facilitate choice...better choices. I also agree, for those interested, that tasting and educating yourself is both fun and valuable.
I also see the advantage of discussion and conversation on the subject.
But the real value comes when wine is a catalyst, when it makes the experience greater than the sum of its parts.
This is what is captured by context, this what Francois waxes on about,
this is what Florida Jim and other express in their notes.
Wine is a bridge, not a destination." (~Scott Manlin)
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