The similarity between you, me, D36 and also hairdog and CeMar is uncanny. Your list of interests is so similar to mine including the cosmology, instrument making/playing, aeromodelling. I bet your blood group is O negative too. If all us HD guys are so similar perhaps there is a genetic reason why we go for LDWs (or do we make them LD with our "boring" hobbies?). Maybe we are genetically predisposed to seek answers to our problems and found our way to this forum because of it.
SD