It's a matter of basic axioms. Lefties are weak and they know it so they want to rely on someone to care for them. Righties are strong and they know, instinctively, that they are strong, so they want to compete.
This was exactly my thought process when I was 18. Righties = strong, want freedom and self-reliance. Lefties = weak, want others to take care of them.
I'm not young enough anymore to know everything, though.
In the real world, after meeting countless people suffering the effects of systemic inequality, injustice and oppression I had to change my mind and discover that it's not that simple.
There are two types of people: those who divide people into two types and those who don't.