Throughout history, some people have tried to restrict the options and actions of others even though those actions/options presented no physical or measurable threat.
One of the most fundamental tenets in System Of Life Institute's Practical Philosophy is that diversity is good--the more options, the better. This is based on a Darwinian view of our species.
We can look back with condescending smiles on some of the past efforts to limit diversity--efforts to suppress thoughts, ideas and actions--efforts to burn or make illegal certain books, etc. But before any of us gets too smug, take a look at a couple of sites below listing recent attempts (mostly the last 100 years) to restrict the free flow of information, thoughts, ideas, and art.
If you're not already aware of these attempts, then you are in for a treat. These are some of the most fascinating moments you will spend on the Internet. But please remember, even as the stupidity and short-sightedness of some of these would-be censors amuses you, THEY are deadly serious about controlling you.