In some cases, true. Not always. Library and bookstores would be filled with poems only, no prose and/or short stories only, no novels. However,
varieties of expression are allowed people in the world of print communication for a reason. They're allowed here for that very same reason. Amazing, eh?
Analyzing the words of others may not be a necessary thing; however, for me it's part of who I am. Dovetail that with the fact that, in these arenas, words are our sole source of trying to understand another person. The expressive-print options [including Emoticons] add to "hearing"/"seeing" how the other person sounds/looks as they speak, so more verbal/non-verbal clues are given with my reading others, as well as their reading me.
Hope your day is going well, Partisan

Lizzytysh