Everyone has one. It may be increasing your personal wealth and security, it may be forwarding the cause of a persecuted minority. It could be both.
For a team to function well, everyone on it needs to have a shared agenda. For a team member to be happy, they need to feel like the team agenda is somewhat aligned with their own personal agenda. For a team to be happy, they need to feel like no individual is prioritising their personal agenda over the team agenda.