"just reformat/reimage the drive and remove all the crap" And that is not more work? It was usually the way I did it, too. But this requires checking with the

"just reformat/reimage the drive and remove all the crap" And that is not more work? It was usually the way I did it, too. But this requires checking with the owner what apps are important, saved preferences, where are the important files stored (they never know) etc.