I actually was thinking about that yesterday. A lot of my BBM friends have been broadcasting their goodbyes recently, stating that they are moving towards iphone. The list has been increasing.
3 of them were actually die hard BB fans, owned the 9900 for a while and loved it.
Well sometimes i flirt with the idea of switching to iphone when i would be reading a magazine or checking out some new awesome app, and then i find out its only available on iphone. But am sticking to BB until now. My priority is still business versatility, keyboard bliss, and the fact that wherever i land, i have a connection on my phone (having a global BB connection is a lifesaver compared to Data roaming on iphone or android)