Its really a good idea to save bitcoin for the future and yes it is a good investment and there are lots of users of it do treat it as an investment but we should not fully rely on it because there are instances that prices might crash in the future thats why we just save or buy only the amount we can afford to lose up.
It depends on the person's goal and when they need to gain more Bitcoin's. I've found most of Bitcointalk users and people on YouTube trying to giveaway some of their coins or trade them for something that will benefit them somehow. Most of them don't really want the money or they act like they don't want the money because they let most of their Bitcoins go when the price is real low.
Proper calculation shows that everyone that invested in Bitcoin at the right Bitcoin Exchanges when it was 2016 and under made money from having Bitcoin in their wallets.