If you asked most middle-aged adults whether they would like to be 20 again, the great majority would reply with a resounding "NO!" In light of what you now know about the different periods of adult...

If you asked most middle-aged adults whether they would like to be 20 again, the great majority would reply with a resounding "NO!" In light of what you now know about the different periods of adult life, why do you think so many people would respond this way?