You’re better off assuming anything you input into social media, SMS, iMessage, WhatsApp, Telegram, or whatever can and will be made public. Act and share accordingly.
Likewise, I assume everything I post will eventually be read by someone I wish didn't. I had some experiences where I didn't experience appropriate discretion and had some unpleasant side effects as a result. This means I usually exercise a fair amount of editorial restraint on most everything I post.
The reality is, I don't have a whole lot of real-life friends that I can talk to about things anymore, at least not any that I can reliably see on a regular basis. Even if I did, I'm not always great with verbal communication, even though I can speak a lot at times.
This leaves writing as my way of working through things. It's also how I learn things as well, it seems.
Sadly, there is an increasing number of topics online that are third rails and cannot be debated or discussed in any rational sense without the proverbial firestorm being unleashed on you. One only has to look at the upcoming Presidential election in the US to find the latest edition of this: two repugnant, polarizing figures, one of which will likely be elected "leader of the free world" and not "seize power" as some media outlets might portray it. That is, unless the American electorate wakes up and realizes there are other choices out there, one of which is Governors Gary Johnson and Bill Weld.
My rather innocuous posting on Facebook got largely ignored, thankfully, and didn't degrade into a flame war like I see so many other political posts do. Maybe I have better friends than most, though based on their Facebook posts, I know most of the ones that have declared are backing major party candidates.
The reality is, because of the threat of something degrading into an argument, I don't even participate in the conversation. At all. It means not posting about controversial issues and rarely participating in conversations around these topics. Besides, who on the Internet really cares what I think, anyway?
This inability to have real conversations about things that matter to me extends into the real world, too. Forget the controversial topics, if you were to put potential discussion topics in a Venn diagram, the intersection between me and a significant portion of the population is quite small. Add Aspergers into the mix, and you have a recipe for a lot of listening and not a lot of talking. Or dominating conversations if it happens to be one of those few topics I actually care about.
But mostly, I just get exhausted from having to filter everything I say or write.