When I write I feel this desire to be as clear and precise as possible, choosing exact words to convey a very specific meaning or feeling but everyone perceives words differently. Everyone has a different perception, a different emotional experience with any given word.
They will only understand what their emotional experiences let them.
Concepts work much the same way, we read into a basic concept bearing with it so much personal emotional background. There's no way any individual will ever fully understand what's going on.
Is it a waste to try? No, probably not. But it's immensely frustrating as a writer to have that epiphany.