Only one factoe scares me from investing into bitcoin and that is the coins, ico, tokens, cash that are new in the system and has a great mission that will soon maybe one of the greatest enemy of bitcoin in terms of number of users and price.
I honestly don't think that will ever going to happen, bitcoin being replaced by an altcoin, at least not for now. What could possibly the idea of this new coin that will allow it to replace bitcoin, the base currency of all cryptocurrency. All altcoin users are using bitcoin because it's the base currency. Meaning, almost all coins have to be converted to bitcoin first before it can be exchanged to fiat money with the exception of top coins. Every altcoin coming out follow the same principle as what bitcoin has and the only difference is that they serve different purposes and has a different target markets. The target market of bitcoin is all of the Internet users looking for a way to transfer money efficiently and cheaply and frankly enough, bitcoin is doing a great job in making more and more users.
Just look at the facts. Litecoin has been released years ago after bitcoin came out. It is said that LTC is better than BTC but for a long time, it never occurred to people to embrace Litecoin and ditch Bitcoin. New coins are always claiming that they are going to conquer the cryptocurrency world and replace bitcoin but they are just doing that so many people will invest in their coin but it's all a joke. Bitcoin can never be replaced, at least not any time soon.