I'm not from the British Isles, but I will say while it appears the separatists feel like this:

Leaving the U.K. just seems like a dumb idea to me. Sure, there might be oil in the North Sea. And staying in the E.U. may be a foolish economic decision, but a separate Scotland? It's been about three hundred years since they were a self-governing nation. Do they really feel as though the U.K. is shoving them under the bus? Or is it just a nationaist rant?
I have just the feeling that it's one of those situations where the Scots are living in the past, focusing on their past mistreatments from the U.K., and thinking that the only right thing to do is to get off the sinking ship and away from the power that mistreated them.
If Scotland leaves for a little self-governing experiment, though, it would be a huge blow to British prestige. I'd rather see the U.K. leave the E.U. than Scotland leave the U.K.