And has there ever been a religion whose members don't eventually start down this path of shoving their beliefs down others' throats? Because otherwise the end result is still the same, and it just becomes a question of when and not if a religion becomes a net negative on society.
Yes, yes there has. Unfortunately I am incapable of naming literally any of them because either they have no name, or they were absorbed, or destroyed (or absorbed and then destroyed) by other religions or other peoples.
The reason why we wouldn't know of these religions are precisely
because they don't actively spread their beliefs.
I can think of one example. A religion believed that it was bad (against God, or some other reason) to breed. They didn't actively spread the religion, and all died (of old age, generally). That religion died with them exactly
because they didn't spread it (successfully anyway).
No idea what it was called (I vaguely remember it being an "offshoot" to Christianity, but could be wrong). I would look it up, but have already proven that opening tabs to research on my phone (which is what I am using) can and will refresh this tab, losing everything I have typed. I will see if I can find out AFTER submitting this post.
EDIT: well, that was pointless. After literally 500 sites about abortion and reproductive rights, I couldn't find any hint at what I was talking about. I'll look into it again later.
Post Script: various forms of: Hinduism, Buddhism, Shintoism, Shamanism, Paganism (which is pointless to say because that basically encapsulates any polytheistic religion) don't forcibly spread their religion and/or beliefs. Other forms, or, more specifically, people
claiming to follow them,
do forcibly spread. But, like with people claiming to be Christians, but actively NOT following the teachings of Christ (and instead following the teachings of "important" people who came centuries or millennia afterward), can we really call them practitioners of the faith they
claim to follow?
And I will leave it after saying that...