I think for myself passing 30 chilled me out a lot more and stopped caring so much about being different from others, having different opinions etc. I left the phase where I felt I needed to be surround by people who agreed with or understood me. Of course all people need some of that, but I tolerate difference a lot more now.
There's a phase in life (I think the twenties) where you are figuring out your opinions and so feel more threatened by the opinions of others. That is even more pronounced in teenagehood for most.
But then you do get the occasional very well balanced teen and tween, so yeah it's different courses for different horses etc.