Is Quran the proof of God?

[ApeNotKillApe]

So why is Allah, the author of all physical law, so preoccupied with gay sex?

Homosexuality is forbidden in the sight of Allah. This is why He destroyed the cities of Sodom and Gomorah, told both in the Bible and Qur'an. Homosexuality is a sin. Just as murder, robbery, and all other sins that infest our Earth today and of times in the past. What people don't realize is God does not cause sin to happen. He gives us humans free will and we are the ones that sin. God sent us prophets and scriptures which have laws and regulations for us to model our lives after. But u get, for example, a powerful country like the USA which tells us in our Constitution that mankind is free to do as they will as long as abiding by laws. Homosexuality is an act against God and nature. It is unnatural. But because the U.S Constitution says ur free to do so, it's ok. So a man-made law in 1776 replaced the law of God since the beginning of time. So if politicians today spoke against homosexuality imagine how many votes they would lose for discrimination in a country where homosexuality is said to be okay. Bottom line. Like all other sins Allah doesn't cause them but gives us the free will to follow or disobey His command set for us in scriptures through His prophets, and He will judge us all on what we do and in the Hereafter we will be punished or forgiven and rewarded for our actions in this life

But why does Allah care about it? What's the reason? Why did he create homosexuality if he despises it so much?