Tom -

Have you actually tasted some wine yet? Did it taste just like grapes
to you? Most people can tell the difference between wine and grape
juice -- it isn't just that the sugars have been converted to alcohol,
the flavors change during fermentation as well. This isn't "no
apparent reason" -- it's fermentation, and part of what makes wine so
interesting, and wine descriptions so tricky.

Wine writers do sometimes get carried away with wine descriptions, but
some wines do exhibit flavors that are similar to those of other
fruits, as well as other things. Wine aged in oak can pick up small
amounts of vanillin, for example. Sometimes you have to concentrate
while tasting a wine, to detect a particular flavor component. And
sometimes you might not taste a particular flavor component that
someone else does.

The short answer -- yes, grapes are magical. :-)

Doug