That's trillions of units. So what is the point of bitcoingold, bitcoinsilver, bitcoincopper, litecoin etc etc. Why is all this happening and where is the value. It starting to look like what the Fed does with money printing.
That's why they created their own version of bitcoin or other coins out there, alternative coins short for altcoins were created for what is bitcoin lacking, transaction fees, confirmation speed and key features. Take BTG as an example, they are premined coins that can gather from a GPU mining system which the btc cannot be mined but that coins are just scam created for the sole purpose of money.
Forget the subject of smart contracts and lets focus just on a currency. Why do we need anything other then just the bitcoin block chain?
Because bitcoin cannot cater the needs of the majority based on its features that's why it's not enough. altcoins are created to fill that holes and needs.