Not believing in Ethereum is as good as saying; Not believing in cryptocurrency.
When you are talking about cryptocurrencies, over a thousand of them are built on the Ethereum blockchain.
Conducting an inquiry into Cryptocurrency, and Ethereum in particular; you'll get to discover that despite the success that Ethereum has registered; it has not relented on it's laurels.
They're working round the clock to make things better, technologically and otherwise.
Ever heard about the MEWconnect? well, i'm waiting for the Android version.

My answer?
There are over a hundred reasons for me to believe, rather than doubt Ether