So far, I've only had 3 IEMs die on me.
1) Klipsch S4 died only because the cable snagged on my arm while I was running, which pulled it out of my ear, and I stepped on it.
2) The 2nd S4 I got shorted out when I let a friend borrow them and he got them wet.
3) A pair of Skullcandy Titans popped and quit working after about 9 months (more exercise earphones)
I have about 10 other earphones that I use at work, around home, etc, but I don't see them breaking down any time soon. I don't get how Head-Fiers tend to ruin their earphones so quickly.
Earphones come with a case usually... use it!