@Arthur McGowan the nuns taught us back in the day that it's salutary to make
devotional confessions where one confesses venial sins frequently, since Christians should be aware of their sinfulness and live a life of contrition (fruit of the 1st Sorrowful Mystery of the Rosary). And this was good advice for us children because it hard to think of an instance where a child commits willful
mortal sin. It was the modernist theologians of the post-Vatican II era that confused things by saying that if is difficult - even rare - to commit grave sin [the whole
fundamental option notion]. The result = hardly anyone goes to confession & children even are encouraged to have their first Communion years before learning about how to make a good confession. So no, the sacrament isn't only for people who commit mortal sins, only that those people are REQUIRED to avail themselves of it if they want to receive the Eucharist.