What drives people? Here is the list of things what are the Core motives for everyone's action:

1. Eat
2. Romance/Sex
3. Tranquility/Peace
4. Acceptance/Approval
5. Curiosity
6. Family
7. Honour
8. Idealism
9. Independence
10. Order
11. Physical activity
12. Power over self or others
13. Savings
14. Social contacts
15. Status
16. Vengeance

Take any action, chunk it up and at the end one or more of these drivers would be found.