Sent this by a fellow pilot. Hadn't seen it before. It made me laugh.

At age 4 happiness is . . . not peeing in your pants.
At age 12 happiness is . . . watching aeroplanes
At age 16 happiness is . . . having a pilots licence.
At age 20 happiness is . . . having sex.
At age 30 happiness is . . . having a share in a plane
At age 40 happiness is . . . having a plane all to yourself.
At age 60 happiness is . . . having a share in a plane
At age 70 happiness is . . . having sex.
At age 75 happiness is . . . having a pilots license.
At age 80 happiness is . . . watching aeroplanes
At age 90 happiness is . . . not peeing in your pants.