Hi im wanting to buy my first new Leica that i plan on keeping forever. Then plan on passing it down when im old and blind. I dont want to keep on buying a new camera every few years or so. I want one and done. I have a Fujifilm XT2 for my normal photography that will probably be replaced in a few years but i want one film camera to last foreverI will then place a light meter on top of the camera that can be replaced much easier. I know not having a light meter built in will take much longer for pictures but for speed i have my Fuji, i rather have the engagement in the Leica for film. My main question is do you think 20 years from now a MP will last as long and have just as much maintenance as the M-A?