“There’s an all-too-common assumption that “non-religious” means “not adhering to the tenets of a specific religious sect.” If you aren’t talking about Jesus, or Allah, or reincarnation — if all you’re talking about is non-specific ideas of some sort of higher power or some sort of afterlife — that’s typically seen to be “non-religious.” Atheism — or indeed, any sort of non-belief in supernatural beings or forces — is still so invisible in our culture that the possibility simply isn’t considered. So even supposedly inclusive, secular events end up with religious or spiritual content that leaves non-believers out in the cold.”