That's what most smarter minded people here do. If you look at what rookies are doing, then they basically force themselves to do one thing, while as you also pointed out, you can do both long term holding, and short term trading in order to fully utilize the frequent level of fluctuations that Bitcoin experiences. It's just a matter of allocating a certain percentage of your stash for the long term, and a certain percentage that will allow you to scoop up short term profits. But then again, no matter how many times you advice people to do something, they will just follow their own route as they are self appointed experts of the market.