Do you also always type certain parameters every time you run a command, like always typing --force after rm? Any command parameter can be defaulted at a global level so you don't have to type it every time. These defaults will always be overridden if you actually supply the parameter when running the command.
The above example is the same as running rm myFile.txt --force since we've defaulted the force parameter to always be true when not otherwise specified. If you wanted to override your default, you could do so by actually specifying the parameter from the CLI like this: