Those of you who prefer Whatsapp I would really like to hear why. You say BBM wont stay on your device, but I want to hear your reasons.
It has already been brought up that you can't share pics in groups with the Android version. But whatelse?
Primarily because everyone I know have started using WhatsApp. It has become the de facto IM client. So it seems unnecessary to get everyone to switch to a new IM service for no compelling reason. I also imagine that, given the choice, most people would prefer to use a single IM service to better keep everything in one place. At the moment, WhatsApp is this app.
Another reason is that BlackBerry has a very uncertain future. People also lost faith in the service after the previous failed launch.