There is much discussion on-wiki about admin "burn-out". This is taken to imply that there is a continuing need for more and more admins, Anyone who questions that is just plain wrong, hence disruptive and must be banned.
So why does Wikipedia keep on with a system which overloads admins with tedious vandalism-reversing and sock-puppet-uncovering, when trivial changes to policy would cut out 90% of that tedious stuff? The answer is simple: admins have to be given something to do.
Becoming an admin is one of the goals of the WP game. Unfortunately there's no point in being, as opposde to becoming, an admin. The more sociopathic players find some pleasure in blocking, banning, harassing, plotting, politicking and so on. But at any given time most admins are somewhere along the path to disenchantment as they find themselves exploited again, at a higher level or sucked into corrupt little games. Of course they suffer from disconnection and anomie, and it would get even worse if they weren't kept busy.