[hombre_fatal]

Browsers already have good UX reasons to do something like this. They should offer version history on textareas, for example, so you don't need to ever worry about losing state.

But they don't. So I build it (draft system) for my users by saving what they type as they type it, and they are very thankful.

If you would kill my ability to build that feature, then you better replace it with a solution.