(assuming by "watching the charts" you mean day trading bitcoin)
It is not only day traders who spend their day watching the chart, there are hodlers with a lot of bitcoins who cannot take their eyes of the charts because they are worried of its movements, funny thing is that many of them are not even ready to sell irrespective of what happens. I remember when i was new to the network and had my first bitcoin, i used to be like that, looking at the price and what is happening, glad i stopped that and i am more confident right now.
I am not new in this space but I must confess that I sometimes find myself glued to the chart like a magnet, and can't stay up to 5 minutes without returning after I manage to leave, and like you said, not like I am watching the chart to see if the price of bitcoin will get to a certain level so I can sell, I usually don't have any plan of selling regardless of what happens, but I still resist staying glued to the chart 😁, this is another form of addiction actually..
This mostly happens to me when the price of bitcoin is going up very sharply, like during an intense level of bull run where the price of Bitcoin could be $2000 (for example) this minute and then by the next minute, turn to $4500 or more, it's always an exciting experience for me, which is why I always find it difficult to leave the chart alone, almost like someone watching their favorite movie lol 😁