In a room full of despondent Defenders, leave it to Hulk to give the pep talk.
In this opening scene from Defenders #101, the gamma-green hero encouraged everyone to feel proud of their latest triumph against evil. But Hulk's tough-love wisdom was short-lived. When the other heroes remained sullen, Hulk got mad.
- Hulk: Nobody smiles anymore--nobody is nice to Hulk anymore! And if nobody is nice--then there's no reason for Hulk to stay!
This wasn't the first time Hulk left the team, and it wouldn't be the last.
There's more to the story, of course. In saving the Earth from destruction (#100), teammate Daimon Hellstrom still remained trapped in the realms of hell. Thus, Hulk's attempt to lift everyone's spirits did not signifiy philosophical enlightenment but rather his inability to grasp what was going on. There was something sad about that as well.