Got to say AllyBhoy I'm kinda disappointed with the content of your comment pal.
What exactly is this 'huge price' we'll pay for our Independence because you make the statement but don't actually say what that price will be? I mean what price would you put on democracy anyway, how much is it worth to you?
Break even? NO country in the world 'breaks even' every country on the planet carries a national debt because that's the way the global economy works, every country manages their national debt by balancing it with their GDP. Also why would we need a Euro bailout? I don't get the basis on why you would ask that particular question
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As for the border question......well that would all depend on what sort of arrangement the EU and the rUK came to but this isn't like the ROI/NI situation so aye it might be a bit inconvenient initially for goods passing through but that inconvenience will subside with time and technology. Hardly a reason to pass up on independence.
We most certainly have the finances and the infrastructure, we just need to be the ones in control of it. There are nations less than half our size who have nowhere near the wealth and resources we have who get on just fine as independent countries.
I'm genuinely sorry if this comes across as a bit blunt AllyBhoy but what you're saying has the air of 'too wee, too poor' about it. We've become conditioned to think like this and we need to break away from that type of thinking.
HH mate.