As I said, I think many are missing the point and trying too hard to seek justification. Fly because it's FUN and we ENJOY it........end of!
How someone wants to justify flying is up to them. The original question asked why people fly, not what others think the justification should be. Some will fly for fun, some will fly for utility and some for both reasons. How can you say someone is missing the point if they are happy with there reasons for doing it?