One of the most rewarding experiences in a game for me
I know how everyone talks about how pentakills are. I know it's cool to get one, I've had a few in ARAM. If there's one thing I think is almost as good and less luck dependent is going through a game without getting killed. I dunno if it's just me, but not dying is a huge relief and a bit of an accomplishment as well. Figure, if you die 5 times, that's giving the other team a BF sword or a rod. So by not dying, you are denying them a lot of gold while racking up kills and assists yourself.
I just went 5-0-13 on Ahri and it felt great.