Why is my son weird?

    Why is my son the 'weird' one?
    My wife and I have had a lot of rules for our son, since the day he was born. One of them is; no videogames until he learns to ride a bike without training wheels. Originally, this was to include even just watching us play, but that part has long since been broken, but we remain solid on the premise. He's 4 years old now, and I expect him to master the two-wheeled challenge this spring. He's accepted this rule, though, mostly because, I suspect, he knows no different. We've done a good job as parents to make clear that there would be no leeway with this rule, and he's been very patient with it.
     Why is it, though, that others are so puzzled when my son tells them that he doesn't play videogames?
    My son recently returned from a vacation with his grandmother in Arizona, where they had been visiting her friends. He came back with a ps2 game they had given him as a gift. We gave it back to her, and even she was a little baffled by the situation. She told my brother-in-law about it, and he offered to give my son his ps2 to play it. He also seemed baffled.
    Not long ago, my son was at a birthday party for one of his older cousins. His cousin had a gamecube, and all of the kids there were playing. The parent of the cousin noticed that my son had not yet a had a turn, so interjected into the fray that my son should get his turn. My son declined, stunning the audience of parents that let their kids play videogames.
    Why is my kid weird? Isn't this what we're supposed to be doing as parents? Different strokes for different folks, I guess. All I'm trying to do is make sure my son understands that videogames are not the only way to kill time and have fun. I want to be sure he understands that there is a lot of fun to be had doing things that are more active than pressing buttons.