Cables do fail though, completely. They become unusable.
In my entire life time of using headphones/earbuds since school with the PSP, ALL wired options have failed after 1-2 years for purely mechanical cable reasons. Not a single wireless failed for electronic reasons. The did fail for me dropping them and stepping on them reasons, though.
I’ve been using Bluetooth wireless headphones exclusively when I’m portable since 2006 (Sony Ericsson HBH-DS970 represent), with only wired use at a desk and I’ve never looked back.
Hopefully more Bluetooth headphone companies follow suit. Maybe we can even get a standardized battery.