How often do you write a reply but don't post it because the argument just isn't worth it?

Lurker here, wanted to chime in to say yeah, all the time. Everything's usually been said or will be said, so why bother. And arguing with strangers online rarely amounts to anything constructive. It seems a lot of people just aren't open to change or have their opinion/biases changed or challenged, though I'm hoping I'm wrong!