Dots tend to be common on lists as the language used here tends to be somewhat informal, like speech, so trailing dots suggest what you feel you don't need to say or to show an extended pause maybe.
I prefer lots o paragraphs
I often wonder how many millions of words I've typed on forums like this. I can count how many million I might have written in novels and such, but it's been more here. You get a style you tend to use after a while and stick to it - and to hell what anyone else thinks
My primary concern is typing this message in the shortest possible time...