Final answer:
Thrill killers derive satisfaction from a mix of psychological factors including power, control, adrenaline rush, and notoriety or attention. The satisfaction can be linked to deeper psychological issues such as sadism, the need for dominance, and a lack of empathy.
Step-by-step explanation:
The satisfaction that thrill killers get is rooted in a complex mix of psychological factors. They often derive pleasure from the power and control they have over their victims, the adrenaline rush during the act of killing, and the notoriety or attention they receive from their actions. The satisfaction can also be linked to deeper psychological issues such as sadism, the need for dominance or validation, and a lack of empathy.