Well, this about describes me (via Jon). And Les just nailed it! (a must read!)
Btw, with apologies to The Blogfather, I despise HEH. It has bothered me since the first time I ever saw it used in a chatroom (which was probably IRC circa 1988). Dictionary.com gives it a definition of "a half laugh" but I have always read HEH as bemusement but almost a disrespectful, laugh of obligation like "ok, you made the effort to say it so I’ll make an effort to acknowledge you." The two links above deserve much more than a HEH!
I half agree with you. I hate the way some bloggers have a whole post that just says “heh.” That’s not enough, and it’s annoying (part of why I never read Insta).
But sometimes ‘heh’ is good. it can acknowledge that you said something funny but without making you contribute something (often you can’t). It can occasionally close a post when you’re just laughing at yourself.
It’s a nice small thing, but shouldn’t be the whole post.