I see age issue in practical terms. I am father of a 9 year old daughter. I am a Muslim and Alhumdulillah try to best of my abilities to implement Islam in my life.
If some prophet I believe in comes to me and tells me that Allah has told me to ask the hand of your 6/9 year old daughter in holy matrimony . I will show that holy prophet the door.
My point being I do no believe in all those authentic ahadees which prove Hazar Aisah’s age to be 6 or 9 year at the time of her nikah to Holy Prophet(SAW).
Now someone will turnaround and ask what if your daughter was 15/16 will you agree , my answer would be if I was living in those days I would.
Marrying a 6/9 year old girl by a matured and grownup man is not prophetic deed in any day and age. To me my prophet(SAW) was infallible and would know the repercussions to the authenticity of religion he was preaching therefore he would not marry a child. Period.
Bukhari even has one authentic hadees which proves that holy prophet once became naked in public in his young age. I refuse the authenticity of that hadees. Because I believe in infallibility of my Holy Prophet(SAW) even when he was a baby . Allah will not let Allah’s prophet(SAW) to be fallible even if he (SAW) was young kid at the time of reconstruction of Kaba.
CRCC: Center For Muslim-Jewish Engagement: Resources: Religious Texts
*Volume 1, Book 8, Number 360: * Narrated Jabir bin 'Abdullah:
While Allah’s Apostle was carrying stones (along) with the people of Mecca for (the building of) the Ka’ba wearing an Izar (waist-sheet cover), his uncle Al-'Abbas said to him, “O my nephew! (It would be better) if you take off your Izar and put it over your shoulders underneath the stones.” So he took off his Izar and put it over his shoulders, but he fell unconscious and since then he had never been seen naked.