-sudden need of money
-panic emotions
-influenced by fuds
-buying other coins
And other has personal reasons about that. But when you are a long time crypto holder like me, there is no room for a panic emotions as I have experienced this kind of scene before and the best thing to di is to keep on holding until I reach again my goal profit.
I personally don't fall in this current dip and resort to panic selling. I know my goal and i'm determined to follow it. Holding might be quite hard especially if the price keeps on dropping and you see all your investments are falling too but if you are patient enough and you believe in the potentials of the coins you are holding, you will never gonna sell off because you know big profits might be waiting in the long run.