It's true that I have revealed myself to be an atheist on my Facebook page, but I don't really have to wear it on my face every moment of my life---that is, I don't mention it unless I'm asked or in a situation like this. And nobody cares over here whether you believe in the existence of a deity or not or whether you are religious or not---unless you're one of those crazy fundamentalists or unless you try to convert other people or shove it down people's throats. And I like it that way.
Many Japanese people are basically inactive Buddhists---but they tend to live nonreligious lives. Many could also be considered nonreligious---even non-Christians celebrate Christmas (in a secular commercialised way), but we still say Happy Christmas or Merry Christmas, and we don't make a fuss about it.
I have nothing against spirituality or religion in itself, although I dislike religious fundamentalism (religious extremism) and I tend to be a bit cynical about organised religion. I don't understand the notion of living your life with an ancient book as a guidebook or a textbook to life in this modern day and age.
I also don't believe religion should tell its followers what to wear, what not to wear, what to eat, what not to eat, what to do in life, how or when to worship, what kinds of sex should you have or should you not have...etc. I hope you get my point. (In other words, I also wonder why organised religions want to control such things amongst their followers.)
Religion should only be a matter between an individual and their spirituality or maybe their deity. Nothing more.