I didn't once either. You may just not have much of an addictive component to your personality. But if you'd like to try an experiment, go regularly to play casual games at a site like Kongregate and focus on your feelings.

I discovered that some were fun and some were compelling. The two traits are definitely correlated, but there were plenty of games that were only one or the other. There were a number of compelling games that I fucking hated by the time I was done; they had stopped being fun long before they had stopped being compelling.