Ah, welcome back, NFE!!!
Economics does matter; currency does matter. I know what you're saying regarding it being a philosophical argument, but you can't hide from the financials, because it's that very point which will impact people the most.
As an Englishman (yes, the worst type of Englishman - one born and raised (mostly) in the South East), I don't want my economic prosperity tied to a neighboring country which has no compulsion to adhere to sensible economic policy.
I hate the thought of Scotland leaving Britain. However, if that's what they vote for, that's fine. But I don't want an independent Scotland bankrupting the rest of Britain.