Hey manlets, this is why height matters:
First, humans are sexually dimorphic, meaning they have key exclusive gender-based traits. Breasts and wide hips are exclusive to women and it's actually considered deformed if a man has them. Height is also part of it.
Men are on average always taller than women and women are always on average shorter than men, making shortness a feminine trait and tallness more masculine.
Secondly, the most important, height is key to physical confrontation. When push comes to shove such as a disaster, your bud is being attacked, your woman is being harassed, your coworker is about to be attacked and you have to restrain someone.
Confrontational sports are divided into weight classes because when you're taller, you shove harder, you punch harder, your hands are larger to also add more force to the punch, your bones are harder to break, your fingers are longer so if you wrestle or grapple it is that much harder to break your grasp. Because you have a longer reach, you can punch at people from a safer distance where they can't reach you. Because you have longer legs, you can run faster.
When immediate peace breaks down like I listed above, it's your job as a man to protect and fight. All respect for a male comes innately from this, even in basic social relationships at work. If you are short, you will be seen as a woman or a failed man.
Thirdly, women are literally like snails without shells. They have less muscle fiber meaning they have less potential for strength, even with exercise, wide hips make them more prone to leg injury in confrontation, less height, more nerve endings, and less aggression. They prefer tall men because tall men have these innate combat advantages and can fulfill their societal obligation of protection easier and be their shell.
tl;dr if you're short, you're fucked no matter what.