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.
Confidently it is a NO. Since bitcoin is the first cryptocurrency that has been made, other cryptocurrency will need to work hard just to surpass the legacy that become has made. It will greatly hard for them, since bitcoin is widely known. Many people are trusted to invest with bitcoin.