Hi Wolfeyes.
One does become intolerant as I myself have become and found myself to be a lone wolf. Because those people you can't rely on. There are but few people in this world who care more about others than themselves. Just walk away, you can't change them and you are not the problem. You have a long journey in this life, do not stop for those who will bring no meaning but continue walking and maybe you will find those that will bring the greatest joy to your life.