I need dopamine in my life which is why I gamble a bit. I also like thriller/horror movies, I drive faster than I should, drink coffee...

That said, all of that is done in moderation.
I'd never put my well being in danger by spending too much money. I'd never attack or kill someone for money, I'd never steal money to gamble. If you're willing to go that far, you need professional help.
These guys who murdered to get money for gambling weren't just gamblers. You need to be a sociopath, lack moral standards and empathy. A normal person, even addicted to gambling would not do that.
Lol like your mindset concerning gambling, gambling for the excitement is just the best than doing it inorder to get rich . Gambling should be something for fun not to get rich quick, advice, if you start having the mindset of doing anything negative in the name of gambling , just stop before you do something you will later regret .
If you literally apply good principle in gambling you won't lose much , due to the fact that you will be gambling with what you can afford to lose and you will always know when to stop , to prevent yourself from going overboard.
Even playing for money doesn`t make you a criminal. But of course it mustn`t be something like "I want money, so let`s gamble and win fast!" - the result would be really disappointing.
Lots of people play for money, sometimes they are successful, sometimes not. But the main part of them are common people, who don`t have problems with gambling. Even if they lose - they mostly lose small some and get hmm..
they need.