I see no reason (for myself) to spend so much on a something which is just a regular MF prime lens with no real special features (no, I don't count Zeiss rendering to be a special feature since it is so subjective). Any shot I could take with the Zeiss, I could take with a much cheaper zoom (i.e. the 17-40), and no "normal" person (people who hang out on here, me included, are not exactly normal) could tell the difference and no one would ever say "oh that shot would have been so much better if you'd taken it with a Zeiss".
I used to say EXACTLY the same thing. Bought and sold 3 Zeiss lenses (50 f/2, 50 f/1.4, 35 /f2). Then I bought another 35 f2. This time I didn't worry about image quality, I just started using it.
And a funny thing happened.
It began to occasionally produce shots that just looked better. My untrained wife could see a difference as well. The Zeiss rendering is elusive but not a myth. My sharpness-is-everything brain dismissed it for too long.