I neither do any of the options. I gamble sometimes but just for fun and maybe some extra btc. I would be too scared to just loose my hard won money !
Yeah self control is mandatory when gambling. If you lack it, dont even start gambling.
Most people tend to go on and on, because of hope and ignorance.
Yes that is called addiction and therefore gambling can be dangerous.
The only way to make it good is to enforce some control on the individuals gambling.