The fact that nothing (except image deletions) is permanent on Wikipedia makes [[WP:IAR]] work. If someone doesn't believe that my [[WP:BOLD]] invocation of [[WP:IAR]] was proper, they are free to boldly revert it, or in the case of a deletion, find one of those 700 admins to undelete it, in which case a discussion can begin.
This last sentence is the important point. When people challenge your ignoring of established process you have to sit down and discuss things with them - not just keep reverting to the version you think is better and say that discussion is a waste of time. This goes even when you think your view is "common sense" or "obviously correct". If it really is, you will be able to convince other Wikipedians of it. Our hobby is building an encyclopedia - many of us are quite reasonable people :)
Process is basically a way of facilitating discussion and cooperation in this large collaborative project. That's why some of us think it's important, not for its own sake.
Regards, Haukur