If you look 10 years down the line, you wont' need USB or storage anymore. I think thats why apple does it. They slowly do away with things that they think people won't use anymore. Like how they are single handling killing flash for video.
In the future, we won't need wired keyboards or mice, and we wont need physical storage either. The trend is heading towards the cloud. So your mass storage device problem, is only a problem right now.