Humanity needs a central power to organise society along society's desired common goals. Most animals are feudal by nature, so an all conquering King or Queen protecting his or her territory and subjects in return for their loyalty, labour, sexual favours and military support is not much more than a small evolutionary step for man. Democracy and laws uniquely set up within narrowly confined national boundaries which have arisen through feudal systems, and accident, are a progression but a small one away from the animal kingdom.
A bigger progression for humanity results from larger goals which may be achieved within the "natural" boundaries for humanity such as our planet. A grander humanity unifying project, which looks to remove feudally determined boundaries, such as that of the United States or for a future unified Europe are therefore laudable in that they demonstrate greater human aspiration.
In that sense the SNP and the far Conservative right are equivalent to feudal apes that never evolved. They deserve to be sent to some sort of natural history museum and preserved, for the rest of to gaze with continual wonderment and to remind us how man has come long way. The House of Lords might be a good location for such a museum.