Advantages vs. disadvantages
I can save the 10 seconds it takes to pick-up the charger plug and plug it into the socket on my phone.
It will cost more for no additional device functionality.
Inductive charging automatically means no "energy star"
My iPod automatically charges anyway when I put it in the dock on my HiFi.
The £0.50 USB cable I use to charge my phone at work will now be a £?? mat and always take up desk space*
The £0.50 car cable I use to charge my phone in the car will now be a £?? mat and the phone will slide off it on roundabouts*
* OK so I could still use a cable to charge at work and in the car, but if I use a cable then, what's the point?
Come back when it can charge anywhere in my house and I'll give you my money.