I have gotten my fair share of intolerance, ignorance and stubbornness and when those come from grownups nothing i say will change much, so I'd better use my time in more constructive things.
I think there is a difference between grownups and adults. Adults are age based, not maturity level. I know children with more self-control than many adults.
Had not thought about that in those terms. Reminds me of Dave Barry's distinction between men and guys :)