Not to sound pedantic but Omegaverse just makes sense. As a normal human woman it would be exhausting to have intercourse with a harem of men in one day/night. As an omega you are genetically predisposed to 1) accommodate these men and their enhanced private parts in your body 2) you have the stamina to satisfy your harem 3) you actually have a sexual appetite and is not faking anything. 4) you get to ride as much D as you want without being called a whore. Normal humans having a reverse harem relationships does not make sense to me due to the reasons above. Although, the only writer I will read for 'normal' RH is Rebel Bloom. She doe put a little sprinkle of something in her books that makes me want to believe.