I know only a very tiny minority actually want independence.
I think that their calls for their culture to be more widely recognized as separate from "England" are a little petulant sometimes.
It's not like every member of the Heptarchy didn't lose their own cultural independence when we merged.
There are a couple of bearded folks in Cornwall who think independence is good but they are usually drunk and can be found in the dark recesses of a fishing pub.
I had a lecturer at College who ran as MP for Mebyon Kernow but failed miserably to get any significant votes.
More laughably there is actually a "terrorist" group campaigning for independence, http://en.wikipedia.org/wiki/Cornish_National_Liberation_Army I heard rumours they burnt down a brewery in Redruth which seems quite self defeatist!
Kernow bys vyken! (Cornwall forever)
The language/dialect is not the be all/end all of a culture.
It just seems as if they feel like it's big old stupid England ignoring little old Cornwall, when in fact most of England (and the UK to an extent) is painfully ignorant of it's own history/cultural heritage.
Let's face it, most English people's idea of "cultural heritage" is football or fish and chips.
I do in fact completely empathise with the sentiment, just not the sense of victimisation.
If there's a chip on Cornwall's shoulders about England it's considerably smaller than Scotland's.