this is made a rule for the only reason that these women (may be ur grandmas if u go thousands of years back )dont go and sleep with other man for money or their desire and they get the protection and will be looked after and they can leave atleat the rest of there life more over that time the womens are in plenty as their husbands dead in war.my brother it protected u and me not marrying our sisters in this time ,ME as a MUSLIM is my duty to make u aware of these things and I cant disrespect ur religion and give commands like u done, WHEN U SAY SHAJAHAN AND AKBARS CASE OF 8000 CONUBINES IS THAT A MAN WITH COMMON SENSE CANT BELIEVE A MAN SLEEPING WITH 8000 WOMENS (DOESNT NEEDS TO BE A MUSLIM TO BELIEVE),UR WORDS MAKE SOME STUPIDS BLOOD TO BOIL MAY DO SOME STUPID ACTION CAUSE MORE TROUBLE