I have followed the same pattern. I think that as I have aged I have learned more and become much more frustrated with all of the stupid and unethical people in the world. With that, comes less and less willingless to put up with them. With age comes less tolerance for such things. At my age now I know that most of my life is done with and I now have very little, if anything, to lose. That condition brings with it a sense of freedom to say and do what I want and a, who cares about the consequenses, attitude. If I am bad now, just wait until I'm in my eighties - If I live that long!
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"A man needs a little madness...or else...he never dares cut the rope and be free."
Nikos Kazantzakis, ZORBA THE GREEK
Some of us just have a little more madness than others!