I own several (wired) headphones which are either approaching or older than 7 years and are in perfect condition. Sure, some had the ear pads or a cable replaced, but just like stereo speakers, there's really not much you can do to really break them.
I'm still rocking the same pair of Sony mdr-v6 studio headphones that I bought nearly 20 years ago. The rubberized foam on the cups has completely worn away but if anything it actually makes them even more comfortable.
What's the point of shoving all the aluminum there and making it so heavy if you are not planning to support them long enough? My plastic Bose QC 25 have been fine after 5 years of almost every day usage.