Devolving government into smaller units promotes economic growth. The smaller the size of government, the less power it has to hobble free enterprise with taxes and regulations.
Just because people do not wish to live under the same government does not mean they are unwilling or unable to engage in mutually beneficial trade. By eliminating political conflicts, secession could actually make people more interested in trading with each other. Decentralizing government power would thus promote true free trade as opposed to "managed trade" controlled by bureaucrats, politicians and special interests.
Read on:
http://thedailybell.com/editorials/35684/Ron-Paul-Scottish-Referendum-Gives-Reasons-to-be-Hopeful/