As the children of Adam and Xaawo, our main purpose is the worship of our creator.But a woman's sole purpose isn't producing, are you an athiest or something? Allah told us our purpose is to worship him, the only time you can ever consider a woman or any human infact 'expired' is when they stop worshipping Allah.
Our second purpose is to procreate, if that isnβt possible due to a womanβs age, then what purpose does her marriage to a man fulfill. Other than intimacy and companionship.