Cables are not entirely fail-proof - I imagine many people here, including myself, have seen smoldering Apple branded mag-safe, 30 pin, and lightning cables. Moving energy from one place to another, quickly and efficiently, at the small-scale of modern electronics, is tough. I prefer cables for charging, too, but as others have posted wiredless-ness sure is convenient, a la AirPods. I swore by wired headphones until I got AirPods - now I never yank my EarPods out of my ear while cooking or if my dogs jump on me while I am on the phone (for example; small conveniences).