What I don't understand is why every maintainer adds a (unneeded) layer for enable/disable. If you want to run a service, you have a runlevel editor. This is,

What I don't understand is why every maintainer adds a (unneeded) layer for enable/disable. If you want to run a service, you have a runlevel editor. This is, chkconfig in RH based, and update-rc.d in debian based. That is the tool for the job. Nowadays it seems that everybody prefers to invent an additional switch, this is a shell boolean or string, in /etc/sysconfig (RH) or /etc/default (debian). Why ?