I did a poll of random Lonestar 92 listeners and people in our building.

The average age people were when they were "Fun" was 27.  "Boring" at 37.

 

erierika

I can't recall when I became boring?  I was about 25 when I started to become conscious of how often I went out.

Things that people considered "Boring":

Going to bed before 10 on the weekend

You were "fun" when:

You'd stay out late on a work night, booking a spontaneous trip, asking someone out, changing jobs...