Perhaps some agnostics hold the belief in an energy source often referred to as a soul. But do not hold a belief in a supreme being or beings & the organizations surrounding them. RIP might hold that her soul will not wander aimlessly as unrested after death. Not everyone believes as you.

I don’t feel that RIP is religious. However I don’t mind Athiests saying, OMG, or god dammit.. these are just platitudes and common sayings.

This is what's bugging you? Wow...I want your life.

I for one did not say RIP. I said she will be missed. However I have no problem with RIP. One of the definitions of the word peace is "freedom from disturbance". In a postmortem context I understand that to mean her remains will be undisturbed because there is no other way to disturb her now. Therefore RIP is a respectful and noble wish. There is no religion in that definition.

Interesting.
Does "rest" have a religious connotation for you?

As an atheist I don't think it's much different than saying OMG and having it be pretty much just an expression, which btw I've experienced believers getting pissed off about that one.
I've one friend who is freaky about "goddammit" flying out of my mouth. Deffo doesn't mean I believe in god. Vestige of another time, like ghost limb syndrome.

Speaking of not resting & Arethra (well dang, I would hope that's a luxury of being dead, no more worries, "rest in a box if you will" ) there is a story that sticks with me about her told to me by a local mid century modern furniture dealer & her treatment of those who would rent furniture out to her. Without going into detail he was definitely not a fan. ?

This is agnostic.com, not atheist.com. some people here allow the possibility of some peaceful rest after life. There is no incongruity in RIP here.

Interesting. Did not think of that as being religious