the issue i have with high MP monster is that people lie to themself and others.
i hear it often from other photographers in my area.... "i would really love to have a medium format or at least a DSLR with 30-40MP".
when you ask them why you get 2-3 seconds of silence and then they say..."well because i make huge prints" or "i can crop more".
all right.... but i know many of these photographers very well and i KNOW that they make maybe 1-2 prints a year that would justifie a 30-40 MP camera. some never printed large enough to max out a 18 MP camera.
for cropping.. well i don´t know if the 28% more resolution (36 vs. 22mp) will help so much as some think. but then im not a big fan of extensive cropping anyway.
there are sure some who can actually make use of a medium format camera and a high MP count... but when you read forum discussions you think they are all having a A2+ printer at home or ordering 240cm x 120cm prints all day.
a honest answer (for most) would be.." i dont need more then 21 MP. but i would love to have 40+ mp for pixelpeeping at 100% on my 30" TFT"