Ultimately nobody needs to justify why they do or don't want a camera, it's just a camera! If it's too expensive for you then that's fine, if you just don't want it, that's fine, how you define value is entirely up to you! I can state categorically that it makes no difference to me whether anyone else likes it or thinks negatively of me or anyone else who buys it, it just doesn't matter. Obviously Leica is a commercial organisation, it's not a charity so enough people need to buy it to keep it as a viable product but beyond that, I'd actually prefer it if lots of people give it a miss, makes me feel good about my decision.
Performance areas matter to so many people in different ways that there is no universal, for me there is no easier camera to use, it's a fact for me but may not be for others. I have many many thousands of images from Nikons and Canons and the difference between those and the Leica for my work is night and day, there is no competition at all, I recently had the opportunity mid way through a job I was shooting with the S to use a friends D800, a camera which was my workhorse for a couple of years, I took 10 shots and handed it back, it's just not the same at all in usability which is very important to me as I earn my living with a camera. The final image is all important and the S produces such a fine file but beyond that, the camera just doesn't get in the way, it works and makes me want to use it all the time, that has a huge value to me.
On my latest assignment in West Africa, I had limited access to power whilst out in the desert and under very tough conditions, hot and dusty one minute, hot and torrential rain the next, I had 3 batteries and access to power once every couple of days, I can shoot for 2 days on a single battery, things like that on a commercial job in tough conditions means the camera is worth every penny and more, 2 months of work pays for the camera but the fact that the images are great, the client is happy and I didn't have to think about the camera once means more to me than eye focussing modes and all that stuff, I like simple and reliable, I need nothing more.
Anyway, it's all good fun and there are so many options that there should be something to please most people regardless of budget, desire or ability, get what you like!
Mat