If you want logical explanations, you will most likely surmise the futility of prayer. But if you want results, then you will pray.
An atheist can scorn my prayer times. He can dismember its logic: “If God knows everything and is already motivated by compassion, then why does He need us to pray?” Good argument.
So why do I pray? Plain and simply, it works. (It doesn’t reason.)
If you want powerful reasons, become a philosophy major or a lawyer and feel proud of your rhetorical capabilities. If you want powerful results, pray and don’t fret about the anti-God hubbub.
I have seen answers to prayer. I cannot deny the healings, salvations, turnarounds, miracles of money. My marriage is happy. Three times God healed my back (from separate injuries).
When it comes to prayer, why? is more important than what? when? where? and how? If you don’t know why, you won’t pray. But if you pray, what, when, where and how are all secondary because God looks mostly at your heart.