Selling is bad, because when you sell BTC, you have less BTC and your ability to fuck the state diminishes.
It makes you more of a slave, it makes you weak and powerless.
Selling is good as long as you gain profits. It is wrong to say 'bad' for selling, everyone must sell their Bitcoin. I am sure that no investor wants to hold their Bitcoin forever, there should be a time to sell. Selling doesn't mean to make you weak, it even makes your funds stronger if you can sell at the right time. Getting profits will increase your funds, you can buy a bigger number of BTC. However, you must know well crypto market trend and you must have the ability to analyze when the right time to rebuy Bitcoin.
We buy something because we are aiming on selling it on profits and theres nothing bad with that.It is really just that will be basing on someones target and goals because not all would really be holding like forever and there are ones who would really be doing some short.Its not bad to sell if you are in need of money even if isnt the right time but as long as possible you should be finding ways on avoiding on spending those coins when you do still have other methods or ways for you to make use of specially with some fiat problems. If you dont have really no choice then you would really be on that last resort
of things which i dont see for it to be bad after all.