there are cases with women naturally born with low sex drive, dono if it's biological factor or mentality. but like mentioned above, it depends to the women. some had it very early some late, some just to follow trend (peer pressure). but sex is a natural thing, just go with nature
other than the many benefits which have been pointed out by experts, it makes a woman feels sexy too. however, still, i do believe some don't even have the TIME to, seeing that women nowadays are thrown with much more burdens and responsibilities than before.

agree

i think most of the time, men wants women to show love through sex, so that it becomes something that can be felt, something physical.
so there's a saying women make love to be intimate with their men, and men be intimate to make love with their women.
but sometimes, women feel unappreciated or unloved right after the sex, because, well, most guys just no longer be that intimate after sex unlike before sex when they have foreplay etc, cus some guys just doze off to sleep after climaxing. guys should take 10 mins time to hold the girl and hug her (after play). some small talk etc or just cuddle. give her assurance and feeling of security. this is the part alot of couples have missed out. it's the time they can bond with other, understand their emotional needs not just physical needs.