each excited electron wants to settle down in the most peaceful home (least energy band). each thing that moves wants to come to a halt. why is this world inherently so lazy?
but there are these nomads; they keep unsettling themselves and there is this astro world where they just keep rotating or revolving around bigger cousins. are they really not settled? yes they are settled too: they just do something which they do effortlessly and thats settling down!
now if i also want to settle down then there should not be anything wrong, isn't it. ;)