theres a difference between 10% of people with third party programs and etc saying you suck look at the parse, and it being an official part of the game.
parse doesnt speak to a lot of intangibles, like hate management, damage avoided (there are actually a lot of skills that you can avoid positionally) debuffs etc, putting a parse is officially telling people these are the factors on which you should judge yourself, and we encourage you and other people to judge each other, thats why we have this tool built in to the game.

Its a pretty bad idea.