I don't think non-suicidal people worship existence necessarily, it's moreso that they're too scared of what the alternative to existence might be.
There's too many unknowns and an unknown like that is too much of a risk, and it's not a risk they consider worth taking because their lives are simply average. Pain isn't a constant, they experience pleasure more often than not so to them it's a worthwhile trade off.
Pleasure for pain, pain for pleasure.
They don't see it as existence: the ability to suffer VS non-existence: the inability to suffer,
It's more like "I'm here, and I don't want to risk not being here because it might be worse, so I'd rather endure."
I hang out and talk with a few fairly average people on the daily who do/have struggled with suicidal thoughts, albeit to a much more manageable extent. (Not to downplay their pain, it's just an observation, pain is pain regardless of its severity and all that jazz)
People who aren't, or who have never been suicidal/depressed are becoming increasingly less common as time goes on, but even they believe in suicide prevention despite their own pain.
especially in my generation due to us having had such easy access to every single tragedy that's currently ongoing at our fingertips since before some of us were even 10.
The housing crisis and the cost of living steadily increasing also doesn't help much either, but that's kind of off topic.
My point is, it's a lot more complex than what you're describing.
Though I completely understand your frustration with people who don't believe death to be a right all humans should have by basis of not consenting to be,
I often find myself feeling very frustrated with them too, but I understand why they feel and do the things they do. I am not above nor below them for believing people should have the right to both life and death, or for having a brain that causes me so much agony.
Once I accepted that, I found myself getting less angry with them and it became easier to interact with them as people.
Because ultimately, I realized I cannot change their mind and they cannot change mine. Arguing with them is pointless, you'll just be met with an endless barrage of empty platitudes that might as well have come from an automated message bot for how practiced it is.
Surely it shouldn't be too difficult to say more than the usual guilt tripping dribble or fear mongering about Hell or whatever the fuck, right?
But it's not about difficulty or lack of empathy, most people just don't know what to say to a suicidal person even if they themselves are too, so they just default to what they've heard before out of fear.
Their stance against suicide is not done out of any kind of malice towards us or because they're simply too stupid and privileged to ever comprehend true pain,
there's good intentions behind it and more people recover than not.
(At least that's how the average person views recovery, survivorship bias likely factors into their belief that most get better.
We're all being constantly bombarded with more stories of miraculous recovery told from the perspective of the survivors than we are of stories from the ones who didn't.
So the average person naively believing this to be a possibility for absolutely everyone is honestly understandable, it might even be these stories that keep them going for all we know.
People have their reasons, and I feel most are fairly valid even though they tend to be a bit misguided, aside from the guilt tripping and the religious ones of course, those can go and fuck themselves lol.
And obviously, you could argue that the road to Hell is paved with good intentions and I'd agree. I'm just explaining why the average person feels so strongly about being anti-suicide.
The issue is not their views on the matter ENTIRETY, but more so how they approach it and fail to consider that everyone has vastly different needs and that not all problems can be solved either at all or solely on an individual level. (Someone can be suicidal due to systematic circumstances such as poverty and the likes)
The tricky part is figuring out who's hopeless and who isn't, that's the part I often struggle with as well, even as someone who believes the choice to die painlessly to be a fundamental human right.
I think it's easy to forget that we're likely in the minority of people who probably won't get better, as unfortunate and unfair as that is..
Which isn't to say I don't agree with all of what you're saying, I do agree that non-existence will always be preferable to existence.
I'm just personally too numb to feel upset by these people anymore.
Though I'm not entirely apathetic,
It obviously still hurts for those around me to deny me peace because they're far too stubborn to let go of a corpse that's been rotting on the inside for as long as I've been "alive."
I can't change their minds like I've stated earlier, and I was only really able to understand and sympathize with their point of view during an intense dissociative episode,
I doubt I would have if it weren't for that, and I'm not implying you or anyone reading this are wrong for being angry, because those feelings are valid!
I really hope this doesn't come off that way,,
I'm just writing out my own thoughts about this as it's something I've been contemplating a lot recently.
Good intentions, while appreciated on a surface level, can still feel malicious in nature despite you knowing that to not be the case. The brain is funny like that..
Anyway, ending off this ramble session here sorry about the length.