Too much work can be done by ETH
I use ETH for long term investment, because current price ~ $ 200 is too good to be able to invest. In view of individual ETH can x5 x7 this year. But BTC is not possible.
For trading is also good. Because trading volume of large ETH, large cap, ETH hard to make price in a short time.
And I use it to pay because of its speed of delivery.