For me it's the fact that we exist in this horrific world where I'm denied the option to just painlessly die in peace and never suffer ever again, what I'd fear is trying to die going wrong and leading to way more unbearable agony and torture as a result, it's just so horrific to me how there is no limit as to how much a human can suffer as long as they exist and I suffer so much from being enslaved in this existence that was so tragically imposed without the option to just peacefully die. Personally I'd rather die no matter what to escape from pointless suffering, human existence is an abomination to me, I personally see no benefit to being burdened with this cruel, torturous existence that just causes suffering all for the sake of it and problems there was never a need for just for one to die in agony from old age and more than anything I wish I never suffered at all, I find existing to be so deeply undesirable in every way.