Bitcoin is a great investment but even the best investments can lose money if your timing is wrong, if you bought when bitcoin was 1000+ then even now you are still in problems if you timed your exit right you secured a good profit, so while bitcoin is in my opinion the investment of the century, you still need to use your common sense.
True you have to have timing. Alot of people just think it's buying bitcoin and being braindead after that but you actually have to do some kind of effort to maximize profits. Be sure to buy when they are low and starting to go up this is when most profit will be made.
Indeed, bitcoin was a good assets and business investment too. So holding it is not a bad things to do, instead it is a good good choice to do due to its for the future for every believers of bitcoin community.