wooooo hooo !!!! it works

Mostly works. Has a bug where the closing the last tab in the first firefox window closes all of the windows.

Was getting really annoying having the last tab reopen when opening Firefox. Once configured, it does exactly what it says.

Does exactly what it says will do. Awesome.

This add-on literally makes no sense at all. Firefox ALREADY behaves like this for ages. I was looking for an extension which does the opposite, disables this browser closing idiocy when you close the last tab. So I can sync the add-on via Firefox Sync so I don't have to manually switch browser.tabs.closeWindowWithLastTab to FALSE every time I reinstall browser...

If you can make the opposite of this, then you get instant 5 stars. But for this one, it's gonna remain one...