He should've seen this coming, back when he sold his company to Facebook.
I remember when whatsapp first appeared on Symbian. It was fun and amazing. SMS was still a thing. So, being able to contact someone as many as we want at no cost beside the data plan was amazing.
It was simple. Replacing SMS, with photo and status. Just that, but glorious.
Poor guy, had to be hard as founder, watch how whatsapp and facebook, are going down, after all these scandalls, leaving now while his whatsap's still a "really secure program", before ends like FB's going to be right now. must to be a question of "balls of steel". KUDOS TO HIM.