Believing that life has value is a logically different "belief" or understanding that all of life's problems are contained or subsumed within life itself. I don't see how that's difficult to understand. You can believe something is nothing but suffering and still believe it has value. The two aren't mutually exclusive.
I'm just saying that their conclusion is not illogical if one assumes the truth of that axiom (and a few others).
If most people believed life was pure suffering, they would not be so opposed to suicide.
Sure, some would still invoke
meaning as a reason to value life in and of itself.
I think we had a misunderstanding.
I did not claim that people are logical if they don't understand that, tautologically, life's problems are contained within life itself.
I am saying that if they believe that life has inherent (positive) value, then it follows that, in some cases, suicide would not
necessarily be rational from their perspective. Furthermore, I am claiming that the belief driving this conclusion likely stems from optimism bias.
However, in the case of the axiological asymmetry, it does not entirely stem from that.