Everything has a lifespan. There's nothing in the world or universe that is immortal. It is just a matter of time.
Social media and social networks are in their infancy. They began gaining ground only few years ago. We haven't been around it long enough to know what the life expectancy is. As we gain more data as time goes on, and social media platforms fall and rise, we will begin to understand how they truly work. What makes them tick. We don't know much, though we claim we do. The only thing we do know is how people use it, how often, and basic demographics.
Don't get me wrong, I enjoy Facebook. It's a great way to stay connected with friends and family, while getting more customer engagement for your business. I'm just thinking out loud.
Facebook's growth keeps adding more mass, there will be a point in time when Facebook will reach the climax. It will be massive. What will it be? I don't know, but my guess and bet goes on privacy breach. Any spammer would love to get their hands on such a massive treasure chest of private information. It's just a matter of time until a hacker will find a weakness and hack Facebook, dealing a deathly blow to the giant.
Who knows, I'm just thinking out loud. You can't be as massive as Facebook for a long time, someone will find a way to break it. My estimate, within the next 5 years someone will hack Facebook.
My bet, also, goes out for niche social networks that are gaining popularity. Instead if being massively packed into one can like sardines, join niche networks that really do matter to what you're doing. My feeling is that niche networks will rip Facebook apart piece by piece, but it will take time.
And if you disagree with me, that's good. Do share your thoughts on Facebook in the comments section. I will reply to all of them.