The living being is the only one that can assess the pros and cons of their own living state.
The criticisms of others are considerations.
Those others are not the being in question, and will seldom if ever have a full picture of the suicidal being's state. They can only relate as a fellow being. For example, a pro-life apologist may have lost all four limbs and went on to become a cyborg superhuman billionaire with a beautiful loving family and circle of friends. So, they might tell a suicidal person: "your pain's not that bad. So what, you only lost your fingers on one hand, I lost all my limbs! Yet look at me now, never been better or happier! Therefore it is not logical for you to do this!" But that survivorship bias may blind them, aside from the lack of direct experience of course, to the suicidal person's other grievances. Perhaps they practices hobbies like guitar or painting or something where the dexterity of those fingers was crucial, and additionally is unloved and uncharismatic with pathetic social skills, in stark contrast to the survivorship bias cyborg.
Also, each person is different. One person may quite literally get trapped in a deep dark dungeon that fortunately has a stash of water and palettes of peanut butter, enabling them to survive for months. Another person may have a peanut allergy and die from simply being in the room as it gets warm and peanut fumes escape some questionable jars.
So, for one person to say another's state of suffering is invalid, because the pro-lifer lost all their family, lived alone and homeless for 50 years, prospered in the peanut butter dungeon, had cancer 300 times, was attacked by a gang of scorpions, bullet ants, and murder hornets on dozens of occasions, mauled by a bear, parents hated them and beat them from day 0 until their death then came back as zombies to torture them more, so on and so forth, but overcame all those things easily thanks to some source of resilience genetic or otherwise developed and is now living high so hey, there's light at the end of the tunnel for everyone. It still doesn't add up. Another human is a different human. Built different.
A different person might stub their toe and it flood their brain with incredible trauma and fuck them up permanently. Sounds extreme, because it's not common. But you do not know until you are that person. And when you are that person, on top of all your suffering, you will be constantly gaslit about how "it's not that bad, you crybaby whiner pussy loser. David Goggins will show you the way! No excuses be tough or else we'll send you to the psych ward to scare you straight!"
Irrational death might be a decision made in extraordinary circumstances such as intense inebriation. If you are able to understand that you are in an altered or temporary state, then it really does make sense to wait it out a bit. Of course, you can always wait it out as long as you feel able. Not everyone will be able to wait it out like the cyborg survivor, so self-analysis is in my opinion one of the most rational forces one can employ. And that includes an honest look at what the next decade looks like in terms of potential.