Why multitasking on the iPhone is a bad idea

People keep complaining that one of the deficiencies of the iPhone Operating system is Apple's restriction on running multiple processes simultaneously. The masses continue by stating that Apple is falling behind the technology curve because other operating systems such as Android allow multitasking applications to run freely on their handsets. Let's be clear, your iPhone already multitasks but it only does so with Apple's built in applications such as the iPod. It's great to be able to launch your music then go surf the web or use some other app while your music continues to play. Opening this feature up to any application could lead to handset crashes, slow performance and decreased battery life (Apple's main argument for not allowing multitasking) and not to mention users getting frustrated with their devices. Apple wants to control the user experience as much as possible and this is a potential source of bad PR for them if not implemented wisely.
     The president of the Internet himself Mr. Leo Laporte mentioned on the air a few times how his Nexus was made unusable for a period of time due to all the applications he had running.  It looks like task killer applications are going to be hot on Android! I would be in favor of allowing certain categories of applications to be allowed to multitask. For example allowing a music streaming app like Pandora to continue to run in the background would make sense since the ipod application already does that. Allowing an instant messaging client to run in the background makes sense as well. Developers wanting the right to enable multitasking in their application should be held to a higher standard. Back in the old days we had to submit our applications to a testing lab before Verizon would accept it in their store. It was expensive and time consuming but the quality of the applications was much higher than some of the crapware you find in iTunes.  I don’t know Apple’s procedure on application submissions. I should investigate that.