We can indeed trade using ethereum, both short and long term. Hold ethereum is also good. I agree with you, when the price of ethereum goes up, we can sell it to make a profit. We can do this by always looking at the trend of bitcoin price movements, because when the price of bitcpoin goes up. the price of ethereum will also go up
As a start, although we often say that the development of ETH prices is quite slow, this time, it is quite different. The price of ETH can jump quite sharply following the increase in the price of Bitcoin. But if the potential is good for short term or long term, for trading or investment, in my opinion, ETH also has high potential, and is profitable. Although everything will certainly depend on the methods and strategies practiced. But at least, ETH is quite safe compared to most altcoins.