I'll add my name to the list of DMs who are bad at on-the-fly note-taking. I've run entire sessions with lots of crap happening and when I look at my notes afterwards there'll be maybe three words on the page, plus the encounter/xp table, the in-game date, and details of when/where they stopped.
The next day (usually) when I do up the game log I'm mostly going from memory, aided by such notes as I did manage to take.
I'll also add my name to the list of DMs who refuse to touch VTT game-running. Nearly all my adventures these days are either homebrew or using very old modules that VTTs don't support, meaning (from what I gather) to run them halfway well the prep time would be insane, mostly due to mapping. If VTTs supported on-the-fly drawing by means other than a mouse (e.g. finger on a touchscreen, or stylus on a tablet) that'd be different, as I could draw the maps in real time just like I do on the chalkboard in person - or I could describe it and a player could draw it, same diff. But they don't, meaning all the maps have to be digitized, cleaned up, scanned, uploaded, and otherwise farted around with; and life's too bloody short for that.