I live in a strange world where everyone (no exception) in my family (parents, siblings, children, wife, wife's parents, siblings) all use iphones. In my world even 99% of my friends and colleagues use iphones and that spans several continents. I currently only have one friend in Argentina that has refused to convert. And it is for that one friend that I have whatsapp. When I convert this friend (and I am working on it), I will have zero need for this. Like I said my world is strange in that it all exists within the walled garden. But I enjoy it.