i think you  should invest in bitcoin casino but with in a limit. because it is not an investment that if the rate of some thing will decrease and you will hold it and when the rate raise again you will sell it. in gambling when you lose u loses your investment for ever there is no return in gambling. therefore i will like to say that you should invest such an amount that you can care to lose. if you invest your all money and it is a bad day for you and you loses your money then what will you do.