You can always re-enable the translation popup through the page's context menu. It has an entry for "Translate to English" (or whatever your preferred language is) right there.
The problem is that a "permanent" decision has to be made before the user has the option to discover how to make it less permanent.
When it comes to UI issues, the existence of a solution with enough poking around is rarely a solution at all. The problem is that the UI is creating a conflict for the user at the beginning; being able to resolve a conflict is far worse than never creating the conflict at all.
