There is a story, perhaps apocryphal, of a slave who used to sit behind the Roman Emperor and whisper "you too are mortal". The hopes were that it would prevent hubris, arrogance, and the believe that they were above all evryone.

Same here.

I'm a mod at several other sites, and it can be a thankless job. Of course, one isn't supposed to get into it for the thanks and the appreciation. It's a voluntary accepted position, and one does it because they want to give back to the community which they are a part of. Or because like the nagging nellies in a Home Owners Association they just like the idea of power. Neither really deserves anything special.