There’s not really any neutral reason to speak or write that word, at least in the U.S., because it is so infamous that in any context you can use “the n word” and everyone will know exactly what you mean. In terms of direct semantic meaning, the actual word adds nothing.

The potential downsides of using it are also famous. So the only remaining reasons to speak it are to show that you can (demonstrating your power), or choose to (demonstrating an obstinate desire for conflict).

And obviously if you are installing a text filter in software, you will need to type it out and store it that way.