I have a set of IEMs that I bought at least 8 years ago, and they still work fine. And the wire is even replaceable, though I haven't needed to do so.
If your wired headphones are only lasting a couple months, then likely you're buying at a price point where quality suffers.
Agree with the tangle of wire, though.
I'm looking for long lasting iems myself -- the bunny ears that I recently bought had the cables die on me pretty fast. What are your recs ?