You can just buy bitcoin and store in your btc wallet...and by the time btc increases in price value...yours also increases too...
That also means an investment..... Gaining profits...
Certainly a very good approach to put all their savings into Bitcoin and wait for the time when the price will rise by several times. But I can not always wait and I think that money should work on themselves. Therefore bitcoin should be multiplied. But the idea of gambling is interesting, but very risky. I will not go for it. It is better to trade and expanded.
Exactly its better to trade and multiply bitcoins instead of keeping them idle in wallet no doubt it will give you good profits in future when price goes higher but it will never multiply the number of coins in your wallet and simply holding them without doing anything with it seems to be an boring process of making money.