Question

What ought to motivate human behavior

Answer 1

Many things do motivate human behavior. Greed, lust, thrist for power, envy, and revenge are the usual ones. What should morovate is love, patriotism, and honor

Answer 2

Human behavior is motivated by primary and secondary reinforcers. These are stimuli from the environment which possess a certain pull and enable people doing things which increases their chance of obtaining these reinforcers. Food is an example of this.