Language evolves to reflect the speed and constraints of the tools people use to connect. Short initialisms like NBD persist because they carry practical utility: they defuse awkward situations with minimal friction and allow people to communicate comfort without heavy emotional overhead.
Mastering informal texting language comes down to situational awareness. Read the environment before you hit send. When comforting a stressed peer or posting lighthearted social updates, three simple letters do the job effortlessly. When dealing with critical workplace issues or complex institutional matters, spell out your intentions clearly so nothing gets lost in translation.