The older we get, the less we like people. Why is that?

because we've heard it all before

Because through a liFe people NEEDS other peoples to success in life.
After we becaming older(I'm 30 thanks god), true colours comes to surface.

It's same in war. In war many people who were always nice(old,young) become monsters in blink of eyes.

I believe we become less interested in being part of the herd and want to be comfortable. Family disappoints. Friends turn out not to be friends. People we respect turn out to be corrupt. We become blase. The circle of people we care about shrinks.

I find the opposite to be true. I'm getting more understanding and empathetic, less judgemental and angry, towards people as I get older.

But I'm a bit autistic, so my experience might be different.

I've been sitting here for 5 minutes trying to figure out if I really do like people less or not! In ways, in other ways I now understand people more than I used to so have more compassion than I did.

I reject your premise.

i'm not sure that's true. my experience is that people soften a bit as they get older. certainly lots of people get a bit more rigid & set in their routines, but i'm not sure that exactly equates into actually liking people less. if anything, i think people get a bit more understanding & a bit less antagonistic & judgmental as they age.

certainly most studies show that general happiness & satisfaction with life increases as people age, & a higher level of happiness ought, at least to some extent, equate to liking others more, not less.

I've never really liked people. Persons on the other hand, I always have, and still do.