I think "know your audience" can be dangerous advice for writers. Write stuff you yourself find interesting and entertaining. Writing for yourself is fun, and it shows. Writing for others is work, and it shows.

Success is largely the failures you avoid. Health is the injuries you don't sustain. Wealth is the purchases you don't make. Happiness is the objects you don't desire. Peace of mind is the arguments you don't engage. Avoid the bad to protect the good.