Do we really have to grow up? The Bible says “yes”:
And He Himself gave some to be apostles, some prophets, some evangelists, and some pastors and teachers, 12 for the equipping of the saints for the work of ministry, for the edifying of the body of Christ, 13 till we all come to the unity of the faith and of the knowledge of the Son of God, to a perfect man, to the measure of the stature of the fullness of Christ; 14 that we should no longer be children, tossed to and fro and carried about with every wind of doctrine, by the trickery of men, in the cunning craftiness of deceitful plotting, 15 but, speaking the truth in love, may grow up in all things into Him who is the head—Christ— 16 from whom the whole body, joined and knit together by what every joint supplies, according to the effective working by which every part does its share, causes growth of the body for the edifying of itself in love. ―Ephesians 4:11-16
Well, this means that we have no time to waste, and since age is no guarantee of maturity, we’ll have to learn from God how to get there. We live in a day where there’s a revolt against maturity, however, retaining childhood is not normal. It’s appropriate for a child to be a child, but it’s not appropriate for a child to remain a child. Growth―physically, mentally, emotionally and spiritually are the proper goals of childrearing. And so it’s important for us, as parents, to have a vision of what maturity looks like and how to attain it. Maturity is central to our daily lesson plan.