A question I found myself wondering, when I heard this news, was "why WhatsApp?" It seems to be just like the many other chat apps on the market, the sole difference being this one cost me a buck on the App Store. People around the web are fearful of the insertion of ads by Facebook into their currently ad-free new purchase. According to "Facebook's WhatsApp Acquistion Explained," the reasons for the biggest start-up acquisition to date are pretty clear. Through WhatsApp, users send 500 million pictures daily, a staggering amount that overshadows Facebook by 150 million. Out of fear of being forgotten, Facebook is attempting to stay relevant by owning the apps that have potential to replace it one day. Another interesting point behind the purchase is that Facebook wants to know what you're talking about and with whom. By owning this hugely popular chat app, Facebook just bought it's way into the "dark social" communications.
And a point I find to be the most positive and arguably most important is the concept of connecting the globe. WhatsApp is hugely popular globally, and by purchasing into something that is already a huge success on different continents, Facebook is giving itself a way to apprehend these growing markets.
In reality, Facebook probably just wants to know what you like so they can continue their aggressive targeted advertising and collect your private information.