I've tried a few wireless headphones in stores. I could never get over the HISS they produce, when you turn em on and listen quietly. If they don't hiss, which is rare, they are still a disposable product. As soon as the battery starts failing, like with smartphones, they are done for. Depending on usage this can happen very soon, like after maybe two years or so. What then? Am I expected to spend another 200-300 Euros to buy a new pair, just because the battery on my old one failed and the manufacturer is not offering replacement kits?

Nah thx. I also do not see the convenience to be honest. Another device I have to keep charged aint convenient to me. Especially since a wire hase never gotten in my way. I just route it beneath my t-shirt and that is good enough for me.

And if one is using headphones at home, the situation gets even worse for wireless, in my opinion, since at home portability and isolation are a non issue (most of the time). Sony XM 5 for 340€ that will last 2-4 years, or an HD 600 for 320€ that can last 20 years, if not longer? Heck, I'd even prefer a 150€ HD 560S over the XM4 and I think they will easily last a decade as well.