i am a former racist but now a eugenicist anti-racist
i still say Nigger 50 times a day but i do not mean "black person" when i say it. Nigger is Nigger. just like Redneck doesn't mean White Person. yes the term Redneck is racist but it means a specific kind of white.
the difference is Rednecks are maybe 5% of whites while Niggers are 99% of blacks but it's still not the same thing.
Example of blacks who aren't Niggers: Candace Owens, Thomas Sowell, MKBHD etc.
yes those are exceptions that prove the rule but it is those exceptions who carry the most unique and valuable genes.
all these white supremacists who are proud of being "normal" do not carry any genes worth writing home about.
if you want to maximize your genetic potential you mate with the most impressive specimen across the highest genetic distance.
impregnating your sister on other hand best case scenario will produce just more copies of yourselves plus some added genetic defects due to natural mutation and recessive genes.
now if you or i were Elon Musk or Erling Haaland maybe creating copies of ourselves might be a worthy endeavor but unless you consider yourself perfect as you are you might want to mix your genes up so that at some point down the line 10 generations from now some random combination that includes your DNA does turn out to be exceptional
obviously i am not saying impregnate a 60 IQ sheboon but if i can find a 110 IQ black woman to impregnate i am going for it LOL