Not a PC death, but in a previous campaign, my character was excluded from play - for good plot-related reasons - which left me with nothing to do for many hours. I got bored, then angry, then absolutely livid. Fortunately, I was able to go outside and play with the dog. I should have simply gone home and come back the next day (we were playing over a weekend). The point is that not playing - not being an active member of the group - is not fun. All members of the group should do their best to include others, so if someone's PC dies, do your bit. Because next time, it might be your PC.