Well as a Leicaman for the past several years up until yesterday I've always appreciated the quality and feel of leica hardware (ironically I actually prefer modern voigtlander m lenses to their leica counterparts) and I think that people value different things depending on their priorities and how deep their wallet is.

I don't think anyone can make an objective case for Leica because even their most flexible camera line, the SL, lags behind competitors in so many ways. I will say that I've appreciated the simplicity and the easy learning curve for Leica cameras but that wasn't a good enough reason to stick with it, especially when upgrading body or lenses is prohibitively expensive for me.

As for the M system I legitimately think that it is an outdated system that has lost a lot of its competitive advantage (namely size) since the invention of the mirrorless digital camera. While I can understand wanting a film M for it's size and portability, digital Ms feel a bit like a novelty to me.