Why in the hell does Firefox want to reopen in the session that crashed it?
It's bad enough that Firefox crashes all the time, especially since the recent update, now it also demands to open the session that crashed it, often leading to guess what? More crashes, brilliant I tell you, brilliant.
ప్రత్యుత్తరాలన్నీ (1)
Firefox will automatically try to restore the tabs and windows from the last session if a crash has occurred or Firefox didn't close properly the previous time.
If the session crashes another time then you will get the "Well this is embarrassing" page (about:sessionrestore) the next time you start Firefox.
You can set the browser.sessionstore.max_resumed_crashes pref to 0 on the about:config page to get the about:sessionrestore page immediately with the first start after a crash has occurred or the Task Manager was used to close Firefox.
You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.