In some mysterious psychological way that I don't fully understand, per-pixel scrolling helps me to mentally keep my place significantly faster and easier than per-line scrolling.
Similar to the two sibling posters, I find pixel-scrolling (particular with the weighted momentum feeling you get on macos) to be more visually comfortable and easier to track.
I found it frustrating in spacemacs that I couldn't get this set up properly (and I'm not even sure if it's possible too). Everything else in emacs was eye-opening and fun.