Don't know if Shapend is being ironic but I think it is half the fun. If you want efficiency in getting from a to b then get on a scheduled airliner. I think there's something interesting in old GA stuff the same as some people find traction engines interesting. I don't want some super duper efficient machine that you have to press a few buttons to do what takes you ten minutes with a checklist on a 40 year old Cessna.