I'm in the same boat with you on this, but this could be a nice option during very long travel days when you're away from outlets for a long time. I hope to see the technology perfected!
Some days I have very heavy use with my 1+ and having the ability to drop it on the fast charger getting about 60%-70% after about 30 minutes (wireless) makes for a convenient option. When my 13PM gets low, usually at inconvenient times, all I can do is plug it in and wait ... wait ... etc...
Be nice to see a much faster charging iPhone. Even 0-100% in an hour would be awesome.