CalvinDude makes a brilliant observation about the destruction of Sodom:
“Now obviously, God did not find even ten righteous people in Sodom, as the town (and the surrounding region) were destroyed in Genesis 19:24. This is evidence of the depravity of the town. But here’s what struck me about this passage this morning. This is also evidence of original sin, for surely there had to be more than ten infants or toddlers in Sodom and Gomorrah, yet they were not considered righteous given that God destroyed the towns anyway.”
This would be something good to bring up with the Mormon missionaries at your door.