That people don't really know how to survive outside of civilisation. If your city was attacked and you had to fend for yourself you would probably be killed, or starve, or die of dehydration, or freeze, or commit suicide.
How absolutely vital it is to be fit and physically strong. Running doesn't just make you 'fitter', if you don't go running you are unfit. If you don't do resistance training then you are not a man.
That people are so deeply concerned with how they are regarded, they have a desperate need to be liked. A person expressing his individuality has to be able to be disliked and even hated.
People don't know how to think properly, read properly, live properly.