The perfect trip may be hassle-free but the lack of drama means it rarely makes a good story. And for Tayla Gentle, it’s carnivorous fish and food poisoning that sticks in her mind. But why? She talks to a psychologist about why we’re hard-wired towards ‘negativity bias’.

Ask for my most controversial opinion and this is what I’ll tell you: there’s nothing more tedious—or forgettable—than a trip that goes perfectly to plan. Call me contrary, but I like my travel experiences served ‘bad’, peppered with challenge, and accompanied by a side of mishap.

But why do some of us favor our worst trips? That’s a good question; one that psychologists and philosophers alike have been pondering for centuries. Is it masochistic to find joy in discomfort? Is it odd to crave the exhilaration of misadventure? Is it strange to delight in disaster?

Or is it simply human?