There is no god. Muhammad was a pedophile and a tyrant.
There is a unique Almighty God. Look up to the sky, to the vast pathways in it. Or look to the clouds pouring rain. Then look to the scientific process behind rain coming from the clouds. God Almighty uses that scientific process to hide Himself.
I don't know what you refer to by "tyrant". In America, people get jailed 40, 50, 60 years or for life. That is tyranny. Muslims thank Islam and Muhammad (peace be upon him and his family) for his sublime guidance.
You say pedophile. Christians accept that Jesus spoke in the cradle, that John was a prophet at age 3, that Gabriel came to Joseph's rescue when the latter was yet a little boy. Atheists accept that half of the world lives with less than 1 US dollar a day, and there is nothing whatsoever after this life. But that Muhammad (peace be upon him and his family) married a girl aged 6, they can't accept it. They are extremely ridiculous. An unmarried girl after puberty in an outrage. Muslims don't believe that Muhammad consummated his marriage with Aisha when she was 9. They believe he "miraculously" consummated the marriage when she was 9. It's completely different. He probably turned the girl into an adult at the time of consummation, then made her back into a girl; just like he made rain to come from the skies, and just like he split the moon in two for the unbelievers to see.
In America, a man may marry up to 20 wives or more. Yet, this is a man who knows there are laws, that women vote, that physical violence on the wife is a crime, that no man is better than another on the sole ground of race, wealth, or so on.
Stop insulting Muhammad, the most noble and the greatest of the human beings. Is he insulting you ?
By the way, marrying a little girl in this day and age is a heinous and horrible act.