It certainly isnt rational.
Of course it isn't. That's the whole feckin' point. Enjoyment isn't rational. The ability of humans to celebrate their very existence through the experience of sensations just for the hell of it is what sets us apart from automata.
Let's face it, Howard. You are never ever going to get it. You're never going to understand how hacking down the M6 in atrocious visibility, steering with one hand whilst mopping up water leaks with the other can be a fun and pleasurable experience, and for that I honestly feel truly sorry for you.