I dont mind folks believing in invisible beings as long as it doesn't make them violent. Problem with the cult of statist is that their believe in a social contract makes them violent
Violence is not the only problem. They can force you to live by rules that are not yours. If you don't do it, you have to accept disadvantages. Pay fines, e.t.c. In the worst case,| imprisonment or even death (which is of course violence).
That's mob rule (or democracy). If your society is made out of Marxists who are atheist too and you're the only entrepreneur in town than you have a problem as well