I never turn or water my compost. Mainly because I compost with humanure via my composting toilet. We also add our weeds, dead garden plants, egg shells, left-overs (we're vegetarian, so never any meat). Our chicken bedding goes in as well and the mix from our compost toilet seems to aid in the composting of the pine shavings relatively rapidly. Currently a 2 bin system made with pallets; one for active and one for aging. I think primarily the compost toilet keeps moisture levels perfect. I've never had to water my compost and the piles are always healthy and active. Plenty of appropriate worms and insects which obviously move in and out, or around the perimeter of the pile as the temperature and habitat changes. I don't know that I would ever compost actually, without a humanure method. I'm amazed at the rate in which compost piles lose moisture as is (our pile shrinks by maybe 80% in hot weather months), but they never stop 'working.' Almost everyone I know who composts traditionally that has compost piles fail; it's almost always a lack of appropriate moisture. When we cover our C. Toilet addition with organic material (leaves, hay, weeds, etc) it supplies a cushion of aeration so that we never need to turn the pile. It's a lazy persons compost really; no watering, no turning, etc.