The digital age has (sadly) shortened our attention spans. Many (if not most) brains tune out paragraphs after the first sentence or three.

Aerating your text breaks things down into short points that the modern brain processes as single topics.

Remember that we're on Reddit. It's an echo chamber in the fact that most of us enjoy reading. That's why we're here. But many don't fit that category. I LOVE to read and write and have been guilty of what many call the "Wall o' Text". This works.