Humans generally get out the gist of what they need to say right at the beginning, then spend forever qualifying, contradicting, burnishing or taking important things back. Yor rareley miss anything by cutting most people off after two sentences.
I used to go online all the time, and then I had to stop myself. . . because I'm a writer, and it's like: to have a procrastination tool, like, within my computer. . . it was just getting too hairy.