~snip~
I rarely even hear words from my friends that they gamble just arbitrarily to seek entertainment, but they often assume that when they gamble it is likened to them working to make money.
^ I had rather do the same, I gamble to seek money but at the same time, I found something that I have fully entertained.
All mentioned in OP were right but the number one that I always remember is to visit first the ToS before diving into a gambling casino, most especially if the gambling casino site is pretty new that could probably from time to time the term will change. Everything is under your control, you should moderately gamble to avoid such addiction that could probably ruin your life if you cannot control it.