Consider who your peers were then. Were they likely to get addicted? I know my circle was elite--doing the probability calculations, circulating card lists on Usenet, and joking that gambling was taxes on stupid people.
Now as an adult, I see tweens with addictions to multiple things. Watch them beg to buy a Pokemon pack, open it, and lose interest. It's completely the dopamine expectation. And it takes years in recovery. But I think I was ignorant and unaware in the 90s of what other people were addicted to.
Even if you aren't prone to gambling there are other factors that can apply. I never was into gambling, but I grew up in the Dutch countryside in the 90s, so trading with local players was my only option. I spent a ton of money on boosters as a teen without realizing it's all manufactured scarcity.