Because they help one another by not misinterpreting/incompleting any messages, texts, e-mails, etc. being sent.
Explanation:
We need to keep our texting etiquettes important because they help our messages be more formal, "personal"-like, well-written, not sloppy and neatly done. It also gives a chance of improving and practicing our texting skills. Without texting etiquettes, we wouldn't be able to understand what we are saying to each other when it comes to messaging. Hope this helps!
