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.
@Rajchandu, im one of the people who see bitcoin as a good investment, i see it that it has a big potential. and i agree with you that when one invest, he must only invest what he can afford to lose. so that you will not regret.
regards.