Some people believe that IQ is all that matters. 

If you weren’t born yesterday, you know that being smart doesn’t make somebody happy or well-adjusted. There are a ton of incredibly intelligent people who feel unimportant and unchallenged as life goes on, which can lead them to some pretty dark places. They think their intelligence makes them better than other people, and that it can solve all of their problems, which is just not true. It might help them find a good job, but it can be a burden on their emotional well-being.