selling with a lost for sure is not good for anyone who knows the thrill those who's doing it are the newcomers that doing some panics when market start showing to fall, but those who are familiar with how bitcoin works and how the market moves surely will wait for there advantage holding until they are in a good gain.
selling with loss is different from panic selling.
sometimes you make mistakes and buy when it was not a good time, or because you wanted to take a rather bigger risk and bought on the rise. so you sell when price doesn't move to your expectation at a loss and that is ok as long as you know what you are doing.
but the problems is when people who buy, or invest in anything don't know what they are doing. when they buy into the rise they do it because they are afraid of missing out and then when they sell they are afraid of missing out again! and in this process they only lose money because they don't buy back at bottom.
All this is lack of courage or fear of more losing. A single wrong decision of wrong buying or selling make so much fearing a person that he dont take further risk and therefore lose the lost money.A good approach is to learn from the previous lessons and come back with more passion of winning.
it is nice imagination, i will be lose on condition where the price is trend down for long term be hold and of course losing if i sell it. Usually i sell position because it is trend down for long time and i use strategy short term investment becoming scalper short taking profit and it was worked at least on my strategy. 