I've always figured my airplane is really a dumb investment and its essentially a complete loss for all the money I put into it. I keep fixing it up and it looks shiny, beautiful inside and out, great paint, great upholstery and great panel. Cool prop. TKS, rocket. Its cool! And I always figured damned Im one dumb so of a &*^% for spending all that money on it if I think its an investment. But I like having nice things and its really really nice! When I need to overhaul my engine - soon - that will be another pile of money that I wont recoup when I spend it - I mean a lot of money. My airplane is in such tip top shape it probably already is at the max of what a rocket will go for even with a high hour engine. But I will spend the money to overhaul it anyway because its my long time keeper. And if I got in the mood to do a diesel if one were available - meh - I would do that too - but not because I think its an investment. PS - there's other money I actually invest - but my airplane is my mooney money hole.