What is the purpose of immersion? What makes immersion valuable? Because generally the answer given is escapism.
I think, again, that you've simply managed to convince yourself that your preferences are important and meaningful, because most people find it unappealing to admit they can be silly and superficial.
As a deliberately extreme example to clarify the concept, imagine someone who cheats on their significant other, and then rationalizes it in their mind: "She never treated me well, so she got what she deserves!" or "Monogamy isn't natural, you can't blame me!" and so forth. This is a case of someone acting poorly, and then doing mental summersaults to convince themselves that not only was their behavior acceptable, it was actually the correct, appropriate thing to do. The girl deserved to be cheated on.
In this case, we aren't talking about people acting immorally or unethically, just acting on silly, juvenile preferences. And even though that is much better than being explicitly immoral, it's still something people don't like to admit to -- and so people will find rationlizations to explain why superficial preferences are not only okay, but actually good and correct, as you have done here. People will go to great lengths to justify their behaviors and feel like they're deep, complex, and moral people.
And surely we wouldn't have so many McDonald's if it was just junk food. The fact that McDonald's is so popular is proof that it is healthy, beneficial food.
Let me ask you this question: what attribute of a game do you feel is more superficial than the graphics?
if you look at my original post I said the Wii puts out some of the ugliest. 
