some quick thoughts:

"why practice AAA (cultural festival) when you're not (inserts religion)?"

because, one always has their aging, traditional - or orthodox, even - parents as well as extended families to please. to think that there isn't any reason for an atheist or non-believer to go through cultural celebrations just because, is the epitome of ignorance.
to think that one enjoys making an effort not to wince or simply yell "fuck this shit i'm getting outta here" shows how immature you are, really.
there is nothing confusing. we all have our own cross to bear - and if you think i'm a christian for using this as a reference, then please, go educate yourself.