One reason why Dante most likely wrote the Inferno was to warn sinners about the afterlife. To depicts what would awaits them in case they sin.
The Inferno, a part of Dante's poem in The Divine Comedy, narrates the journey of Dante through Hell, guided by the ancient Roman poet Virgil. In the poem, Hell is pictured as nine concentric circles of torment located within the Earth. Inferno seeks to describe the recognition and rejection of sin.