Are you serious? I don't want to touch my screen.
What can't you do on your iPhone because of the current multitasking? ...
There are so many little things that I am used to doing on my old Google Nexus that I can't do on my iPhone 5, it's not funny.
I am sure everyone has their own apps they want running in the background sometimes, but in my case I run into iOS's limitations if I use an app like flashlight, or a training app, etc., and then I want to send a text, make a quick call, change a song or a podcast and so on.
It's an idiotic limitation and it is even more idiotic that Apple gets to decide which apps it will allow to run in the background (usually its own apps, plus a handful of third-party ones).
If WE (the users) had a choice to decide which apps can run in the background, you wouldn't be hearing so many complaints.
Consumers are a fickle bunch and iOS can go from being on top (and it has already lost that to Android) to struggling like BB in a matter of a year or two, if it doesn't keep up with the competition.
And as far as touch on OS X, I am sure there once were people who said that nobody needs touch on their phone, too.
Touch is available on Windows and it has brought some pretty innovative designs to the laptop world. Chrome is coming out with touch this year (if I were Apple, I'd actually worry about Chrome, because just like Android, it may come to bite in a year or two).