It's not like IQ is a measurment of anything useful. It's really just a way of displaying the normal distribution for scores of a specific test that doesn't really have any other applications in the real world. I scored 120 when I was evaluated for ADD. a score of 100 is the mean for the test group. Nearly everyone has a score within 10 points of 100. A 120 means I'm very good at taking the IQ test. It means literally nothing else.
I have a life full of bad decisions, impulse commitments, and thoughtless mistakes. If I were really "intelligent", then I'd be a helluva lot prouder of what I've made of myself. Instead IQ tests seem to be mostly a test of applied reasoning. Not really a test of how one's brain functions in day-to-day life.
If I were smart enough, I'd develop a test that measures people's social and personal productivity, compare that to a test of how happy they are in daily life, and combine those scores in some way. Those people are smart. They know what they want, and figure out how to get there, and in the end are satisfied.