I agree that our choices should not be limited to protect us.

However, we need a better solution than pop-up warnings. I guarantee that you have clicked through a pop-up warning that was standing between you and the thing that you wanted to do (as have I, and everyone else who has used a computer for more than a day). We very quickly learn that most warnings aren't going to affect us, and that they're just saying "are you sure" to things that we're already sure of.

We've all selected a file, hit the delete key, got the pop-up saying "are you sure you want to delete wrong_file.txt", hit "yes" (because we always have to hit yes after hitting delete), then looked at the outcome and thought "oh, that was the wrong file" too late...