Well, part of it is how the brain works. It puts an emphasis on first experiences. You'll have more of these experiences when you are a child and games you play as a child will have a bigger impact. So, logically, the most memorable games would be games you play as a child, and if you play a lot of Japanese games in elementary school and middle school, you'll probably end up with a fondness for Japanese games. I guess I didn't really think in those terms. There are plenty of japanese games I liked (Final Fantasy, Tekken 3, Mega Man to name a few), but also western games (Tony Hawk, Half-Life, Diablo 2).