Convenience at places you spend a lot of time like an office desk or bedside. Just saves the wire plugging in.
It is just a minor added convenience I'd not recommend paying substantially more.
An example is you'd pick up off bedside charger when you wake, when get to office put it on charger when not used, pick up, put down, no wire and its mostly charged when you leave work and so you can last basically many days never plugging in a wire. Is that worth a lot of $ ?. No not in my view but it does for example reduce the need to plug in say a Powercore or a Fusion instead later in the day.
If all other things were equal and I had choice of wireless charging vs wired, I'd go with wireless.