[bradart]

In all seriousness, it makes almost no sense for anyone to develop a virus for the android platform.
A)Most things you install are from the market and, as previously stated, google keeps a close watch for malicious activity.
B)The way typical users take advantage of their phone is general web browsing and communication. I can't think of anything that i have recently put on the internet that i didn't expect people to see. Also, if someone got a hold of my call history, they would be pretty bored.
C)Just because the platform is popular does not make it a target. While some people may create a virus just to mess with people, those will be few and far between, not to mention nipped in the bud quickly.

While you personally might handle important information on your phone, i sincerely hope that you wouldn't use an app you didn't trust completely to access your sensitive information. Keep in mind, also, that, even though YOU may deal with very important and confidential information on your phone, most people don't. To the general public, a phone is a phone. This is why malicious activity has been primarily focused on PC's. I cannot think of an easier platform to mess with than Windows Mobile and, to my knowledge, there was never any virus or hacking that permeated that ecosystem on a large scale.

There's being safe, then there's being paranoid. I am totally comfortable saying that i will never install any kind of antivirus software on my Android device and i believe that the fact that it exists is the ONLY reason people think that it is in any way necessary.