I've been laid off or fired ~7 times, in slightly different ways, some more humane than others, and it's quite a... traumatizing/colouring experience that stays with you from that point forward, even when I was over the job anyway.

I once had my access cut off while I was working late, albeit from a much smaller company. Got to go to sleep knowing I didn't have an income in the morning. Incidentally, in retrospect I'm glad they made the decision for me, since I eventually was forced to leave my awful hometown in search of greener pastures, so it's not always a bad thing long-term, and I ratted them out to the tax man which I'm sure they had fun with.