IMHO, "wireless charging" is not [yet] truly wireless. While, technically, yes, there is no actual wire involved, the way "wireless charging" is implemented at this point in time, you have to lay the device you're going to charge on a pad. This pad is of finite, usually small dimensions; you can't toss the phone at it from ten feet away. How is this so different from using a dock?
Sure, you can basically drop the phone somewhat carelessly on a charging pad as opposed to carefuly inserting it into the connector of a dock... but, seriously, how much trouble is it to insert it into a dock? Unless your blood alcohol level is through the roof, you should have no trouble inserting the phone into the dock's connector.
Give me 802.11 a/b/g/n/ac, where the "ac" also stands for "alternating current," and I will be all over it.
I used wireless charging on a Palm Pre and found it both cool and convenient. I also used wireless charging pads on my Lumia 928 and found it to be a great feature. What I'd like even more, however, is a charging cradle/desktop stand like I had on some of my BlackBerrys.
With wireless charging you need a slightly thicker phone to accommodate the hardware and I doubt Apple will ever compromise on design to add such a feature. But two contact points on the back of the phone, flush with the back case, would be a simple addition. And a desktop stand holds the phone upright for viewing while charging. And it's nice to simply snatch up your phone when you leave the room.
Laying your phone on some kind of a pad to charge it sounds like a cool idea on the surface. However, I think it is more gimmick than great new feature. I keep a charging kit for my iPhone 5 in each of my vehicles and in my suitcase so I can stay somewhere overnight and not worry about remembering ahead of time to bring a charger and cord or 12 volt adapter plug with me. That got kind of expensive with the iPhone 5 and its Lightening connector. Wireless charging? No thanks, I'll just plug it in like always. I'm lazy but not that lazy.
The iPhone's Lightening port is pretty sturdy, but plenty of other phones are not so robust. HTC has had some nightmares with the design of the micro-USB ports on some models. Anything that saves the wear and tear of plugging in looks like a good thing to me. And once you get a taste you realize it's a nice (not necessary, but nice) convenience. It's elegant.
When I was using my Lumia 928 I'd be lying in bed and just before I dozed off I'd hear my text message alert. Nice to just roll over and pick the phone up, not having to unplug it. I had a Qi charging base on my desk, another next to the tv, and a 3rd on my nightstand.