I've never understood the lure of Nurgle. I'm a perfectionist, and so I'd probably be a follower of Slaanesh if I were a worshipper of Chaos.
But that's what makes the Dark Gods so interesting. Each one represents a different aspect or personality. I can accept that we all die, or that a horrible disease can kill me. With this approach, Nurgle becomes irrelevant (for me). If you're a violent person, there's really only one way to go. Schemer? Tzeentch is your pappy.
It's really quite amazing to compare the human psyche to both the gods and races of 40k. It's fairly satirical! That, however, is for another topic.