Indeed those are dangerous thoughts that always lead to problems, and not only financial ones.

Gambling isn't there to make quick bucks, it's for entertainment and relaxation. Even poker and sports betting should not be considered as a money making process, let alone purely luck based games like slots.

Yes, slots are addictive because it's fun to play them, and there are so many of them that you can always find a perfect one to your liking. And that's a good thing in general, don't turn it into something more serious than entertainment.