My answer to the principle is: NO
Bitcoin is money, the value of money is built on confidence, tradition and security, attributes that Bitcoin offers easily. The analogy between Bitcoin and social networks is completely incorrect, people think that Bitcoin is an myspace that will be replaced by facebook. It turns out that Bitcoin is money and not a social network, so this comparison is completely wrong.
Most of mankind's wealth resides in vaults for hundreds of years, so the circulating medium is derisory close to it. Why are we going to need fast, no-fee coins if we can use paper money and banks? Bitcoin's purpose is to be a safe asset, scarce and superior to gold. What is behind Bitcoin is the fact that no politician can steal you through taxes or inflation, there is nothing safer than Blockchain and Bitcoin. So far no technologically superior currency has emerged to Bitcoin to the point of provoking an abyss between technologies and will hardly emerge.
BUY BITCOIN TODAY AND ALWAYS.
The blockchain technology is best thing that has happen to the internet of recent. Bitcoin being a store of value is true, but note that this value is driven by users number and activity, which most recent project don't posses. Linkchain is one project i have noticed has a practical model to grow user base, this emphasizes the fact that getting users that will continue to use your product is key here.