What a load of nonsense. You couldn't be any more wrong. People had been trying to figure out a trustless, decentralized electronic payment method for a long time. None of them could solve the double spend issue without using a centralized ledger. Bitcoin elegantly solved it.

I assume you are a newbie who has just recently been awestruck by the promises of ICO vaporware and the "amazing" things that people will do on this "decentralized global computer" called Ethereum. It is hard not to get bedazzled by all the marketing. You need to study bitcoin a lot more to understand it's technical as well as socio-economic aspects that excited the first people Satoshi contacted. For example, Here is one of the greats, Hal Finney speaking about it in his own words.

Also, Please stop shilling Ethereum like it is some kind of promising long term investment. It has proved none of it's proposed usages. It has only contributed to the ICO craze and even there it has competition in the form of competing chains like EOS, Lisk, QTUM etc. For anybody is looking for a long-term investment, bitcoin with its proven network, robustness, utility and community should take be the biggest part of your investment.