The wrath of God is not a subject to be taken lightly. It's not something we should ever laugh about and it isn't something that we should see as a joking matter.
It also isn't something we should ignore. The wrath of God is a truth that every Christian should think about on a somewhat regular basis. Doing so will radically transform your view of God, your own salvation, and the lost.
The writer of Hebrews says that "our God is a consuming fire" (Hebrews 12:29). In light of this, he is to be worshiped with reverence and awe. All too often my worship is lackluster in its quality. I'm not in awe of the consuming fire that God is–his holiness, majesty, splendor, and glory.
Arthur Pink wrote a little book called The Attributes of God. In his chapter on the nature of God's wrath, he gives three reasons why the Christian should meditate on this particular attribute of God.
The wrath of God is a perfection of the Divine character upon which we need to frequently meditate. First, that our hearts may be duly impressed by God's detestation of sin. We are ever prone to regard sin lightly, to gloss over its hideousness, to make excuses for it. But the more we study and ponder God's abhorrence of sin and his frightful vengeance upon it, the more likely are we to realize its heinousness. Secondly, to beget a true fear in our souls for God: "Let us have grace whereby we may serve acceptably with reverence and godly fear: for our God is a consuming fire" (Heb. 12:28-29). We cannot serve him "acceptably" unless there is due "reverence" for his awful majesty and "godly fear" of his righteous anger; and these are best promoted by frequently calling to mind that "our God is a consuming fire." Thirdly, to draw out our souls in fervent praise for our having been delivered from "the wrath to come" (1 Thess. 1:10).*
So though it isn't a popular subject to talk or think about, it's a healthy one. Think for a moment today about this God, the creator of all things, who is a consuming fire. Behold his majesty and glory, be in awe of him, and praise him for his wonderful grace upon your life. Furthermore, praise Jesus for his finished work. He took upon himself the wrath of God in our place. What a wonderful Savior he is.
*Quoted from The Attributes of God by Arthur W. Pink (pg. 109).