Here we go again with all the crocodile tears. Alemci what a surprise to see you here. 
Well lets see here I see most people have all the most pertinent points. That most biblical scholars put Mary at age 11 when she gave birth to Jesus (pbuh) (dont even think about 16 thats just christians who want to whitewash the history of their own religion). Joseph in the earlier church was depicted in paintings as being an old age pensioner. Well how else would early christian leaders shake off the the accusation that he was the father of Jesus (pbuh). But since we are dredging up history from over a millenia ago and judging it with todays moral standards why dont we go further hmm.
Lets see Prophet Solomon according to the bible had 700 wives and 300 concubines. Now in those days Im sure concubine was not really a career move most would take so how do you think he acquired them. According to our day and age what would he be considered? Many of the Jewish prophets similarly had a harem full of concubines and many wives.
Prophet Lot PBUH, a pivotal prophet in both the Jewish and Christian faiths according to both their holy books had sex with his daughters (I dont know what age they are said to have been). And you want to point the finger at the Muslim faith for something that may or may not be true (its not in the Holy Quran and as far as I know the hadiths differ on exactly how old she was.
But lets go even further. Romeo the most famous romantic hero in English Literature. Rapist. Why? Well Juliet was only about 13/14 years old and you know in our day and age that would be illegal and abhorrent. You see where your stupid game playing gets everyone. Many British people don't even want to be judged by what their empire did 100 years ago and you want to make all Muslims take the blame for what happened 1400 years ago.
My aunt got married at 14 to a man more then 10 years older then her. 60 years down the line they are still happily married and had 7 kids. Now would I want that for my 14 year old daughter. No. Would I want to be married at 14. No. Did my aunt get any of her own daughters married at 14. No. But at that time, in that place there were little or no options for women besides marriage. My aunt did not like school and was not doing well so to guarantee her future my grandfather thought the better option was to marry her to a good person who would give her a stable and happy life and that was exactly the outcome. Im sure over 100 years ago people in the UK would have barely batted an eyelid to a 14/15 year old marrying a much older man but that definitely would not be the case today.
You need to stop being such arrogant, hateful, cultural imperialists and grow up and look at your own damn history before your start pointing fingers at a man who lived 1400 years ago.
chnm.gmu.edu/cyh/teaching-modules/230