StingingVelvet: Your argument seems to be "hey it's rare so fuck it" I guess. My argument is, give me power over my games please.
I will never go back again to games I regularly have to patch manually. And if you force patches onto gamers, it makes developers more careful in their programming work. No more "ah well, just crawl back to the earlier version".
It is generally easier to just fix the problem that occurred with a patch with a simple fix on that point and keep all the other improvements, then to completely go back another version.
I have full control over my Steam games. Whenever a game needs special care (which happens very rarely for technical reasons) then I can just meddle with the local files. And when I don't like gameplay changes it is usually easily modded.