> You become accustomed to blindly hitting "Yes" every time you've accidentally typed something into the text box, and then that time when you actually put a lot of effort into something... Boom. Its gone.

Wouldn't you just hit undo? Yeah, it's a bit obnoxious that Chrome for example uses cmd-shift-T to undo in this case instead of the application-wide undo stack, but I feel like the focus for improving software resilience to user error should continue to be on increasing the power of the undo stack (like it's been for more than 30 years so far), not trying to optimize what gets put in the undo stack in the first place.