Yes actually, if you can redo choices anytime you like there isn't any significance to them, one click of a button and any screw up is gone. Choices only really matter if you can't undo them easily.
For you, not for anyone else. What part of CHOOSE is too hard for you to understand? If YOU don't want to CHOOSE to undo your stuff, don't undo it. Giving the feature to everyone else and randomly taking away it is a bad design decision.
