Holding is very profitable in most cases, but in a case where the currency losses value after a long hold, you may have to sell at a loss or hold longer. I believe that sometimes people day trade to get money for emergency situations and the there also some who day trade foolishly.
Holding can be consider as the passive way of income, where we do not require a lot of experience or hard work, we only need to hold our bitcoin and when the price increases then we should sill it on time.