As others have said, we don't know what underlying issues a person grapples with in their day to day life, issues which can certainly push a person to the edge once the straw has broken the camel's back.
It is sad and difficult for those left behind, when someone ends their life over what outsiders would see as a surmountable and temporary problem. However, we can never truly know what's going on in another person's mind that would lead them towards that final decision.
We can't playback and experience another person's life as if were a movie, then piece together all of the negative events that lead to such a painful climax. All we can do is theorise and make conclusions based on subjective observations of behaviour displayed in social interactions.
The tragedy in these situations lies in the grief that others must face, the agonising over lost potential or false belief that if only they'd done Xyz, the other party would still be alive. Especially if it appears that one has taken their own life over what seems to be a molehole in the eyes of others, as opposed to a mountain. The perception of pain is highly subjective, and one's molehill could certainly be another's mountain.
However, the person who is gone can't regret anything, they can't introspect over whether their reasoning for suicide was "miniscule" or not, they can't wish they'd taken another course of action, because they're dead. The questioning over what is and isn't a stupid reason is of no relevance to those who have passed on, because we can't change anything about their fate, or wind back the hands of time and prevent it from occurring.
Debating the validity of someone's reasoning is for the living. Once we are no longer of this world, we physically can't concern ourselves with whether our reasoning was valid or not. So I don't think there's any point in putting the deceased's reasoning for ctb under scrutiny, unless it brings another person closure to understand why they did it.
