It’s 50/50 want independence at the moment. It is much higher now than it was before the 2014 referendum. Many expect it to rise as time goes on but nothing in the future is certain. I certainly agree with you Scotland should only become independent when a majority vote in favour of it.
The other parts of the UK should get their own votes on whether to remain in the UK. A united Ireland looks like it could happen soon. Welsh independence could be further off. England could decide it wants to go alone if it wants to and preempt the votes of other parts of the UK, although there isn’t much call for that as yet.
Yes Ireland has made a good success of independence despite Westminster not wanting to let it choose its own sovereignty initially. The sooner Scotland becomes independent the better. I think Norway voted for independence from Sweden in 1905 with an overwhelming majority. They have made a great success of it too.
Like any normal country Scotland will decide what is in its best interests in terms of currency and economic and foreign policy at the time. Since countries make these sorts of decisions all the time the idea that Scotland would be incapable of doing so is what requires some sort of explanation. But the idea that Scotland wouldn’t have been wealthier outside the UK is an insult to our intelligence when we see what Norway has done with its oil revenue compared with Westminster frittering it away in profits for private companies instead of benefitting citizens as whole.
I agree both the assets and the liabilities of the UK state will need to be settled equitably when Scotland votes for independence. We want to go on having good relations with our neighbours - better in fact once the issue of independence is settled.