I have a data logger in each of my planes and my boys planes other than the foam park flyers. Its not an insurance policy that something won't go wrong but it is nice to see if things are not working up to spec or normal like on previous flights, before the next one. I also still use my GSU on my turbines as well, again l like to see good numbers before I taxi out. Not any different than a full scale pilot scanning the cockpit before each and every takeoff just to make sure the gauges look good.