As Richard Restak postulates in his book “The Naked Brain”[0]: the limbic system provides a gut feeling (usually from comfort) and we rationalise our way backwards from that without being able to really pinpoint “why”; usually the “why” is secondary and only added as justification for the feeling post-decision.

[0]: https://www.amazon.com/Naked-Brain-Emerging-Neurosociety-Cha...