“Arguing with strangers online” on its face sounds like a categorically worthless thing to spend one’s time doing, and it’s usually framed derisively. However, I enjoy it in some respects, and derive value from it. When you have hordes of people out there hell-bent on challenging and scrutinizing your every point, no matter how ancillary/trivial, it mandates that every point you make be completely rock-solid, whether logically or factually. And it’s a more stimulating activity than sitting around watching TV.