Obviously language developed as a way of communication, which is a necessity all living beings have evolved to accommodate. Animals communicate with vocal (birds), scent (skunks), and body (peacocks). But man has employed his flexible tongue & larynx into language, with its unique arsenal of words, words, words.
This arsenal, however sophisticated, only highlights its own limitations. The words, "Yeah I'm having a great day." are not meaningful in it's own right. It could mean:
- "Yeah! I'm having a great day!" with a smile = joy.
- "Yeah I'm having a great day." with an eyeroll = sarcasm.
- "Yeah, I'm having a great day."over the watercooler at work = absolutely meaningless.
And you distill the sum of all your senses into, "This is nice."