RE: LT-40 Build
I know exactly what you mean. I have always liked building things. For those who are old enough (like me) I used to LOVE getting things from Heath-Kit to build (electronics stuff), again the joy of building and seeing the results appear before your eyes. Then that industry kind of dried up as ICs came into the market and there wasn't anything to really build anymore (kind of like RTF or ARF is for us now).
I really hope that the popularity of ARF and RTF doesn't lead to the same result. I will be doing another build when this is done, if for no other reason, then to just be building something.