Oddly, tens of thousands of people seem to take great pictures that are tack-sharp without AF microadjust. Lots of people are still posting complaints about their 7D being soft with it. Maybe it's just one of those features for crazy OCD people to try to justify their more expensive camera?
True for the 60D. Canon has really upped their quality control with the 60D AF system. It is very very very rare for anyone to have focus issues with the 60D and it is not due to a lack of using demanding glass.
If you search enough, like I did, you will find people have had to do MA on all their lenses with the 7D or 50D, but for some reason all of them focus dead on with the 60D.
MA is a crutch and band-aid fix to a poorly aligned body and/or lens. It was only ever designed into Canon's cameras to provide a temporary fix for a lens or body that has gone out of alignment when way out in BFE with photos that need taking and no access to Canon to a long time. Rumor has it that one of their pros some years ago was out in the field and his telephoto lens bumped out of alignment and he lost a lot of work due to using MF. Canon added the feature, but not as a permanent fix to having your lenses calibrated by them. Most obvious by the fact that it does not work on zoom lenses for all focal lengths.
Canon actually has a patent on file, I believe filed in 2009, which is a automatic focus adjust system. It has been rumored that Canon quietly put this system into the 60D, which can account for miss-aligned lenses to a small degree. Not a silver bullet, but it could explain why so many lenses work perfectly with the 60D and not other bodies.
While MA is not something that would have hurt being on the 60D, it has proven to not be the huge issue that so many people balloon it out into being.
Seeing as how Canon probably spends a lot of money calibrating lenses to bodies, it would much in their best interest to create an automated system that handles that duty for free.
Caveat: MA would be super useful as a bump to front focus or back focus on object that are quickly running at and away from the camera. If MA was used to front focus, the Camera could be more dead on when tracking objects coming quickly at the camera when a thin DOF is used.