Humans will be created in glass wombs, much like how IVF starts off today. However foetuses will spend the whole 9 months in these glass uteruses filled with lab-made amniotic fluid, without ever being implanted into their mothers. These glass uteruses will be injected with blood and nutrients daily.
After many years of women and men not using their reproductive organs their DNA will slowly erase these organs from the genetic make up of future generations of their offspring. Babies being formed in glass wombs will be born without reproductive systems, thus changing the way our species evolves and procreates.