NC but I have been on Mumsnet for a while, I promise!
I will be voting Yes because I think it is important for Scotland to have a government it votes for. Over the past 50 years, Scottish votes have affected the outcome of a general election a handful of times. Sometimes the overall election has reflected Scottish votes but if you subtracted the Scottish seats you would almost always have had the same outcome (as an aside this means it's unlikely that independence would doom an rUK to a permanent Conservative majority). What this means politically is that there is literally no motivation for a party to do anything to try to win Scottish votes, because they don't matter. Policies are made that are targeted at winning voters in the regions that will make the most difference; Scotland doesn't, so policies and manifesto promises are not made with Scotland in mind. In an independent Scotland, politicians would have to win Scottish votes, so policies and promises would be made with the needs of this distinctive country in mind.
I wrote a blog post a few months ago about how I hoped that whatever people voted, they would be voting for a positive reason, and with a desire to ensure that the positive outcome they're voting for actually comes into being. (For example, many of the non-SNP "Yes" groups - Greens for Yes, etc! - will have work to do after a potential Yes vote making sure their voice is heard in negotiations). Have a read if you fancy: womenforindependencenefife.weebly.com/blog/vote-for-positivity
Two other brief thoughts. I've been in awe of the grass-roots Yes campaign, and have really enjoyed getting to know all the different people in my area who are working for a Yes vote. I genuinely believe that in the event of a "No" vote, Scotland will still be better off (in some ways - recent polls demonstrating a desire to cut funding apart) for having had this referendum in that it has got so many people who would normally not describe themselves as political creatures engaged and actively campaigning for what they believe in. People are now more confident in having these political discussions and I think that could result in a populace better able to hold politicians to account. It's also built a lot of connections between people who would never normally run across each other.
Finally, I have been thinking a lot lately of the quote from Jim Sillars:
"On 18 September 2014, between the hours of 7am and 10pm, absolute sovereign power will lie in the hands of the Scottish people. They have to decide whether to keep it, or give it away to where their minority status
makes them permanently powerless and vulnerable."
Obviously not all agree with the second part of that statement, but the "absolute sovereign power" bit sends chills down my spine and is worth reflecting on whether you are a Yes, No, or undecided. This is a momentous decision. The Union of the Crowns was the absolute definition of an undemocratic process. Finally, the people of Scotland will have the chance to either reject it, or endorse it. A "No" vote is more than a rejection of independence; it is a positive declaration of support for the UK and all that it is. There is no "status quo" to return to. I honestly think that, for those registered, the referendum vote is going to be the most important vote any of us will ever cast.