Why do I use a Mac? Well, let's look at the 1st 9 days of September using Mcafee's iPhone "threat update App." We see one Mac issue, whereby if - when playing an infected movie and click "yes" to a permission request (that you never usually see when playing a movie) the QuickTime movie App will crash.
Compare that to PART of but ONE DAY for Microsoft and Windows.
NOTE - edited with the new native Google Blogger App for the iPhone - I like it!