Assume that in FAA/CAA/JAR/EASA lands all the aeroplane hours have to be logged anyway for engine airframe and propellor log purposes. Surely if you have that discipline it's no more trouble to log the pilots hours as well.
In the US, we do not typically log airframe or engine time unless the aircraft has no Hobbs meter or recording tachometer installed - one of mine is that way and I keep a log. Maintenance on my two aircraft is entirely done on condition (or annually for the inspection) with the exception of oil changes, so tach time is close enough.
Re not wanting to log hours: FAA pilots who have been flying for decades and have all he ratings they want have no great motivation to log time. One such pilot, a close friend of mine, flies one of his aircraft every day. He still has the aircraft he bought wrecked, repaired, and learned to fly in, in 1976. He has thousands of hours in it - it really doesn't matter if he logs the 30 minutes of touch of goes he performs while shuffling the aircraft from one hangar to another.