This Sunday during announcements, I had a slide that read: “I don’t use periods in text messages because I’m angry. I use them because I’m 45.” Speaking in very broad terms, it turns out that older people (raised in a time when the most common form of written communication was a letter) tend to end their texts with periods while younger people don’t (and this practice is defensible according to experts). Furthermore, to younger people, a period in a text is often seen as an expression of anger. I can’t seem to break myself of using periods, but a period doesn’t mean I’m angry, it just means that I’m 45 and my English teachers succeeded in getting their point across.
If you’re interested in reading more:
New York Times: https://goo.gl/6zVwdy
The Washington Post: https://goo.gl/dGcwE9
Business Insider: https://goo.gl/ww3YwZ
National Public Radio: https://goo.gl/oR7qNL