The whole underlying psychology of this orientation spectrum is how much one (consciously or unconsciously) overvalues or undervalues mating. The Mating-centric will predictably make choices which maximize their genetic reproduction/survival (prioritizing the sum of how attracted they are to others/someone plus how attracted others/someone are to them), the problem with that being, the person who best reflects the sum of attracted to them + attractive to them will not always be the same over time. The Spartan, more free of romantic preoccupations, focuses more on whatever their internal interests might be. They are less likely to physically reproduce but more likely to have a fully developed internal self and thus more likely to produce ideas/work valuable to society/culture. The problem is that since they are less connected to others, their ideas/work may never reach others / the world. This is why a Spartan and a Mating-centric pair can work very well together, Steve Wozniak and Steve Jobs being a good example.