>>82182276>a woman having kids over the age of 35, which has a higher chance of birth defects.I mean having kids that late is retarded yes, but nowhere near the high chance of incest fucking over your bloodline forever. Older women have a small chance of their children being born with terrible disorders such as down (stats below)
20 years: 1 in 1,441 (~0.069%)
30 years: 1 in 959 (~0.104%)
40 years: 1 in 84 (~1.19%)
50 years: 1 in 44 (~2.27%) (though most women by then should be menopausal, also wtf are you doing having kids at that age)
Whilst doing a funny with your sister, again, has a 50/50 chance of having at least something wrong with them, whatever that may be is in God's hands at that point. Do you really want to play that game? Normies are retarded but incest is and will forever remain something the masses are right about, don't bang your sister.
Also men are also at risk of more birth defects as they age, specifically because their sperm quality degrades which creates a risk for de novo mutations. I'd put the treshold at 40-45.