i see a few people pointing to the fact scotland has oil. Yes welldone your short sightedness will be your demise. When the oil runs out in 40 or so years what then? you'll have a country with not a great deal in as far as natural resources go.
Second point, quite a few towns in scotland are supported by large military bases
Faslain, leuchars, lossiemouth
There was uproar when the defence spending review was looking at closing both leuchars and lossiemouth as part of the cuts. As the towns surrounding them would be devastated. If you get your independence scotland will have to fund the keeping of such bases or the unemployment of a few towns to its own pockets. Very expensive either way. Not to mention recruitment for scottish people into the british services and institutions.
I've missed another point and i cant think for the life of me what it was... Ah yes:
A quick lesson in geography, look at the "eurozone" as its effectively known. Notice how the capitals of the main nations are all relatively close, ( i think the furthest away is probably berlin) at the core their is substantially more money and more power. This is where all the capital cities lie, now look at periphery(western germany is poor compared to the east, southern italy is poor compared to the north).
Again you get your independence, you'll find that not only will you have to join the EU and pay your own 40 odd million a day bill the UK pays, but that your power will drop substantially. You could argue that you don't care, but the EU are our biggest trading partners, a hell of a lot of that oil ends up in the eurozone. You'll also find that as a result you'll get some power from that, but you'll also be at their mercy because if they stop buying and go to the saudis, the russians or who ever instead, your currency will drop into freefall and that will be that.
Of course this is just how i see it. Maybe im wrong, im not against you getting it but it is naive to think that there is only one side to this argument. And that yes you may be better off, but in the long term, it may cripple you.
I just looked, out of curiosity. In pariliament there are roughly 600 seats (650? something like that?) the population of the Uk stands at just over 60 million. scotland has a population of 5.1million, it has roughly 58ish (cant remember the exact figures) seats of the total. that looks like fair representation to me. Or so near as makes no difference. Your voice are heard then, but you are the minority, not the majority so of course you arent going to get exactly what you want unless its the same as the majority. Simples, democracy as work.