I don't want to get addicted into gambling.
You won't if you stick with your strategy, however, like I said, spending small amount is not fun at all
It is not going to work out like that
If one is predisposed to addiction (and I think there's not a lot of difference among numerous types of addiction, psychologically), the best a potential addict can do is to simply stay away from gambling altogether. He won't be able to stick to this strategy of small bets just because he doesn't have it in him (so it's better not to risk it). On the other hand, if one can keep on playing using small amounts for some time, he can as well bet larger sums as the risk of developing or contracting an addiction will be minimal