Depression

You know you're not good enough to be a top academic at a good university
You're not that interested in money
The thought of being one of the mediocre masses with a normal office job and a normal life makes you want to kill yourself

What is the use of your pointless existence?

>>4
Possibly. But I (>>2) am _currently_ a top academic at a good university, which is a pretty solid proof of my claim.