Human nature is always a continuum. Whether it’s truly a bell curve or not, that’s the best way to imagine it.
Most people have a moderate amount of motivation to work, Some people really like their jobs; some people work out of sheer necessity. At the far ends are people who are driven to pile up more: more money, more fame, more power, more possessions and people who shun all possessions and try to live with nothing.
Six sigma people at both ends - six standard deviations away from the norm: very extreme personalities - obviously exist. If there are 8 billion people in the world, then 13,600 are at each extreme. That’s more than all the billionaires in the world. Even two sigma people - hardly extreme - leaves 200,000,000 at each end.
Yeah, some people are really, really different from you. Nothing else could possibly be expected in a society of 8 billion people with thousands of cultural heritages and hundreds of personality types.