not mine but I couldn't resist
yeah, well halfbloods.
anyone familiar with breeding will tell you that offspring from F1 hybrids ('pure' bastards) is mostly crap. The F1s are what breeders make to provide: they are great, look nice and may taste well but can't reproduce in simile, that's why one needs heirloom, races.
When one ties in Mendelian wisdom with evolutionary biology, more specifically r/K selection theory you've got a perfect explanation of today's chaotic mayhem in progressive circles.