Much better to invest than to gamble i know that two are risky but on gamble you need luck. But on investing you need to wise and choose where you to invest your bitcoin. That is why i choose investment than to gamble.
It should be the best way to do, when aiming for income the answer is always investing or trading, there no chance we can make money in gambling if we are not that gifted, it's a hard job and you need to dedicate your time to learn and master gambling, I surrendered my dream of making money and I shifted it to a more easy one which is investing.