I don't want Scotland to leave the UK, but if I was Scottish I'd be sorely tempted.
Brexit and the last General Election, have made it increasingly likely at some point. The UK govt. doesn't represent Scotland, and is openly dismissive. Brussels for us, read London for Scotland.
People wanting to leave a Union (be it the UK or the EU) have the right to do so. Can't have different rules for each, can we? It's their sovereignty if nothing else