I don’t disagree, at least not necessarily. Sacraments are myteries, yet ones which, like all sacraments, can be misundertood.
I certainly agree that the more we confess the better—assuming we do it properly, a huge assumption already provided for in learning the sacrament.
Confession entails that we forgive ourselves as God has already forgiven us, and my worry (rational or no) is that what seems intended for spiritual clarity actually encourages overscrupulousness and thus defeats the positive joy we are entitled, through Christ, to feel because of His saving Grace in the sacrament of confession. We may not always feel that joy, or it may take time, but it is still ours to feel, thanks to God. It is joy of the prospect of our salvation won for us by the blood of the cross.
“but I never get to the root cause of the sins I commit.”
I would suggest that is always so, or nearly so, and in part explains why we need absolution: God knows the root cause or causes, conditions, and so on. He absolves. He saves us. We cannot save ourselves but for the grace of God, although we must do good works to show our good faith.
God bless.