Either things are basically good - or not.
We (each of us) need to decide which - because the evidence is inconclusive.
What is wanted, and needed, is the kind of confidence in the goodness of ultimate reality as may be found in a loving family or marriage.
Would we say that doubt in the love or faithfulness of a good mother, father, spouse, child is healthy? No.
Unless there is a reason which can be resolved, then persisting doubt is a sign of psychopathology or error.
There can be not ever in a million years be proof, there is no 100% assurance, of the love or faithfulness of another person.
Doubt feeds on doubt - and indeed (with humans) often leads to its own confirmation.
We must choose - and indeed if we want a good life, it only makes sense to choose that life is good: God is real and good.
...Mostly (and bizarrely) because (we are afraid of making fools of ourselves, being 'duped' - being cuckolded by a sniggering 'fake god', taken to the cleaners, gulled, betrayed and laughed-at as childish, idiotic fools.
(God wants us to be humble - well, there is humility for you! As much as you want.)
But so what? Suppose it happened, supposed we made complete fools of ourselves - ultimately we would lose nothing at all. In a world that really was not good, was meaningless, purposeless... then nothing at all would matter- certainly not being a fool.
If we lived a deluded life of happy hope in vain - so what?
Pascal was right, Puddleglum was right, cynicism is a mug's game.
And cynicism's one and only (brief) consolation is the dog-in-the manger trick of trying to turn everybody else into a cynic - to spread the poison of doubt and despair.
(How absolutely maddening it is for the cynic to observe loving carefree joy. The only answer is to destroy that loving carefree joy - to twist it into shame and despair; but even then the mere memory of loving carefree joy is a nagging torment...)
Invincible hope in the ultimate goodness of reality, and reality of a good and loving God, is as easy as being blissful on a sunny spring morning in a lovely place and some hours of leisure... but consider how often we ruin such times for ourselves by our guilt or angst or grasping?
It is so easy! - so long as you are not worried about appearing a gullible fool (especially not about appearing a gullible fool to yourself!).
When in doubt, give God the benefit of the doubt.