If you are looking for long term profit then better find a better way that is less risky than gambling like keeping your coins in your wallet. It would grow in value in the coming years anyway if bitcoin adoption will continue but it has a higher chance of happening. If you decide in depending in gambling to earn profit for the long term then it would be more risky because the other way around may happen like losing instead of gaining. Gambling depends on luck more than skills in some games and if you will have losing streaks then you might lose your funds totally.