I also have some eth. All of the above. I get the eth from my side job. Ethereum can use in different ways even trafing because it paired on multiple currency and also in investment you can purchase token through eth. I never sell my eth. Can buy an ICO token. And I will never sell my eth until I get a lot of profit from it. Can be convertrd to out countries currency. Just like btc, I will wait for eth to rise and I will collect eth as much as I can. Ethereum seems everything use. I think I just use it to invest. I think eth will follow the footstep of btc. So I believe that we should invest more into eth and not only btc. You can invest into some other altcoins too.