For now i using etherum just for For trading to buy more token etherum platfrom and participate on ICO I prefer etherum as a payment instrument to participate with cheap  gas costs that are and fast enough to be the best choice.

I use ETH to participate in the ICO project, as well as to buy altcoin with huge appreciation space.

I am using my ethereum for long term holding and also for trading...but right now I stopped trading for a while.

Well, with Ethereum I now do almost everything , he replaced me with bitcoin , it's easier for me to pay for services and trade better on Ethereum

I usually buy ethereum to trade in tokens created by ethereum's smart contract because the token price created from ethereum is usually very cheap and I usually also use it to invest in some good ICOs and have a project concept that can attract interested people and is very useful for many people.

I prefer part Etherium to invest in ICO, part to leave on long-term investment . I try not to sell Etherium

Of all your proposed options I is more suitable for long term invesment. In my purse MEW kept a lot of tokens that I want to sell as soon as the market starts to grow. I think the price of these tokens will also go up . Also I'm buying on the exchange of promising tokens , and to buy I need either BTC or ETH.

Mostly I use it for trading, ethereum is a unique coin because it can be used to make ethereum-based tokens and markets, this is what makes ethereum use continue to increase so that ethereum prices continue to increase.

I actually use ETH for long-term investment, but now I use ETH more to trade and join ICO if the project is very convincing, the ETH is currently experiencing a very long price decline, so it is suitable for long-term investment

I use Ethereum only for market speculation. Sometimes I buy it for investing in ICO and even rarer for any services on the Internet. Ether can be considered a full-fledged means of payment