I have done very well investing in BTC casinos. Just-Dice is my favorite, although you do have to convert to clams. Yolodice has been legit and lets you do 10x leverage. I recommend SafeDice for people holding XMR. Checking out BitDice as they are having an ICO soon. Thanks!
In above sites you mentioned bitdice is good invest for dice or casino games. Being out of gambling playform. I can say any type of gambling option would waste your money. If you enough fund you can at least donate to the poors. For entertainment you prefer betting to see profit some time.