Why is infralapsarianism important for understanding salvation?

Infralapsarianism, as a theological position, posits that God's decree to elect some unto salvation occurs after the fall of humanity. This understanding allows believers to see the grace of God in a fallen world and highlights His justice in the setting of His redemptive purposes. By placing election after the fall, it clearly underscores the necessity of redemption through Christ alone, basking in the richness of God's mercy towards the elect while simultaneously affirming His righteousness in dealing with the non-elect. Ephesians 1:4-5 captures this beautifully, as it speaks of God's choice of believers in Christ before the foundation of the world.