Here are 10 reasons to support Scottish independence:
https://www.independentscotland.org/articles/14270/why-support-scottish-independence.htm
Of course, the site is pro-independence, so hardly surprising!
However, if you look at the menu on the right, they also have a similar page entitled "Why be against Scottish independence?"
And, a third page entitled "10 stupid reasons to be pro or against Scottish independence".
This pretty much sums up the arguments on both sides. Pick which is the best fit with your personal views. I happen to be pro-independence and a card-carrying SNP member; I don't think that's big news or even particularly important. I know many Scots who agree with me. I also know many who don't.
I also fully get where Maggie is coming from when she says that pro-independence is not necessarily pro-SNP. The SNP is not the only party in Scotland which supports independence. In fact, I fully believe that if Scottish Labour were to completely dissociate itself from English Labour, Corbyn and the lunatic Jim Murphy, AND support Scottish independence, they'd probably wipe the floor with the SNP. And I'd probably rejoin.