Investing in bitcoin casinos's can be good but its also risky due to the fact you have to do it on the right time and it also need to be a trusted party and these are hard to find these days..
Nope when they offering good bank role then why shouldn't not to try? Even though your loosing money in the end let's loosing money is a part of investment but if you can really earn then goo, Try At least those legit bitcoin casino's who offer good percent of investment.