I think that is the only risk in putting your money as investment in gambling because you all have the advantage to win and grow your money consistently, you need to select the most trusted sites in that situation.
I think there is no consistent profit in gambling but yeah in investing there are a chance in profiting if you invested your money in the right sites, and you need to be very patient in waiting for a certain sites to grow your investment so you can profit from them because investing is a long process you need to wait and keep a track of your money!
Having fun in gambling? I think you will have fun in it if you are always winning but if you are always losing in it how would you say that you are still keeping the fun game you desire in gambling? and I think that people playing it really wants to target the pot money nothing more nothing less.
If you play long enough, you will be addicted to. Even if you are rich and do not care about losing and winning. If it becomes a daily habit and it will have a tendency to become an addiction. No one is exempted from being a gambling addict as long as you start playing, you will be an addict given enough time.