We all do buy some thing that are overpriced - simply because we can and we feel good about it. How many here have an iphone ? Cheaper samsung or nokia will also do the job. I think if you can afford it and you are serious about 35mm photography - you should buy at least one Leitz lens in your life.
I have an iPhone, because it comes nearly free with a subscription to a data plan. That is here in the US.
Once in a lifetime buy a Leitz lens? Please expand on why you think that is important. What does it add to a photographer's life that they can't be without?
"Often moments come looking for us". - Robert Frank
"Make good art!" - Neil Gaiman
"...the heart and mind are the true lens of the camera". - Yousuf Karsh