@Faceless One Men would be able to have kids for ages -they're constantly producing sperm.
Women would stop being able to have kids after a while, especially if they ovulated regularly. Eggs have a finite number per woman, which tends to get even smaller between birth and menopause. In the end, at best only some in the tens of thousands are ever useful for having kids.
Of course, that's with normal science rules. Science fiction and magic could do things like stop ovulation cold or keep the eggs intact and in place until the person desires to use them. If a woman had Wolverine type regeneration, destroying the ovary and letting it regrow could theoretically replenish the eggs, depending on exactly how the regeneration worked. (A Wolverine-type immune system, though, would absolutely fry any chance of natural pregnancy.)
Women would stop being able to have kids after a while, especially if they ovulated regularly. Eggs have a finite number per woman, which tends to get even smaller between birth and menopause. In the end, at best only some in the tens of thousands are ever useful for having kids.
Of course, that's with normal science rules. Science fiction and magic could do things like stop ovulation cold or keep the eggs intact and in place until the person desires to use them. If a woman had Wolverine type regeneration, destroying the ovary and letting it regrow could theoretically replenish the eggs, depending on exactly how the regeneration worked. (A Wolverine-type immune system, though, would absolutely fry any chance of natural pregnancy.)
The Galactic Navy Officer Becomes an Adventurer
by Takuma Tomomasa , A_Itoh
Available on mangabuddy for reading, and for sale at https://www.amazon.com/dp/B0BT6V7CMM
by Takuma Tomomasa , A_Itoh
Available on mangabuddy for reading, and for sale at https://www.amazon.com/dp/B0BT6V7CMM