In my opinion bitcoin is good investment because it give an opportunity to the bitcoin investor to earn good profit through holding it in long term or maybe in a certain time.
Bitcoin is an investment because with patience after investing in bitcoin then the profit will show up. But if you are not patient to wait then you will sell of too early when the profit is not yet ready.
Patience is very important once you engage in bitcoin. Because holding of bitcoin is need enough time or proper timing to earn huge profit in the future.