What Scotland really needs is a weak currency. They do agriculture and tourism. Swapping the pound for the Euro is barking mad.
However, I'd welcome a referendum in some ways. Make the case, force everyone to grow up a bit and think hard about the results rather than this sliding tumble by way of patriotism. Being pro-Scottish doesn't mean you have to be anti-British.
Plus, as Nightshape says, how bloody dull and insipid would England be without the other parts of the Union?
I actually think that southern England, not counting Cornwall, is perhaps the dullest part of the Union, the city of London specifically, Greater London has its interesting parts, but my impression of exiting the tube at Bank (where I travel via daily), was somewhat an apocalyptic nightmare of grey suited human worker drones on their way to work in the financial sector, not only was the version of the rat race the most depressing, and frightening experience in my life, but it also reminded me specifically why the Scots are so important to this nation, we need hairy, grown men, in tartan skirts (kilts obviously), brandishing sporrans, and bag pipes to breath a little life into the UK, and we also need no nonsense speaking fire haired women who could quite happily stamp on your face as f*** your brains out.