I think this is the prologue of end of the institution of marriage and sex as a mechanism of reproduction. I am envisaging 100 years from now sex will be no more mechanisms of reproduction for human.

Women will donate egg early on and will be kept frozen, men will donate sperm early on and it too will be kept frozen.

If he /she want their genetic code proliferated they go to hospital pay some money (may be insurance will cover it) and hospital (human production center) will use frozen sperm to fertilize frozen egg in artificial womb.

If men and women don't request human production center from their sperm and egg, government will decide,. based on population need Certain number of egg and sperm will be used to produce human rest will be destroyed when they reach their expiry date.

Institution of marriage will be abolished. Those who get married to make family will be considered "pakhe"
And will be fined heavily.

This way there will be no need of womb in women. Once it is not used for generatins our intelligent "genes" will notice it. Finally there will be a genetic evolution in women. Gene responsible for making womb in women will no longer be active and new evolved women will have no more womb.

Sex will be used as a source pleasure only

Yes, this is the prologue for aforementioned change