In the past few weeks, ETH has been falling, causing many people to be nervous. Some people sold their ETH at that time with the thought: "ETH is dead already."; "ETH will disappear." or "ETH will become a coin". And when ETH rose again they regretted "ETH has come back", "ETH will break in the next few months," "How stupid when I sell ETH."
I wonder if they really love ETH, love this crypto market? Or is it just trending? Do they have enough knowledge, psychology here?
What do you think about this?

I think you need to fully understand the market situation and trust the process. This is a speculative investment that you should be aware that the price will change according to the supply and demand of the exchanges. Don't expect that the price will go up always it's a nature that we always wanted to but in reality it won't happen.