I have been using a good pair of bluetooth headphones for over a year and am perfectly happy with them, Audio quality is never an issue with a2dp. Likewise after getting a decent 802.11ac router that provides stable 5GHz Wifi way faster than what my 100Mbps internet connection can provide, I haven't used wired ethernet for ages, apart from wiring my NAS to the router. 10 years is a long time, very sure the Audio Jack will be gone by then or a rarity like Vinyl today.