The Internet, and all existing services, is based in physical locations, subject to local and international laws, governed by the decisions of real people with diverse motivations, and capable of influencing real-world outcomes on many scales.
That is missing the point; it's not about you are or aren't on Twitter, it's that they are. Twitter encourages contextless "outrage", and things escalate from there. Sometimes justified, sometimes less so.
You shouldn't, right up until the point you wrote something that for some reason takes off on Twitter and then you get your unrelated lecture cancelled or your employer gets calls or whatnot. And then you have no choice.
