I find it unnecessary, I picked up a tip from a friend that in those three lines it gives the sense of a breather, if you have like 9 straight lines of talking it appears as though the person is just lecturing you about something without a pause, that break makes it more natural and fluid, and easier to read
in lieu of that, if you open up an event, right click the white empty area, and go to the bottom and choose "batch text entry" you can add multiple lines of text