It is actually a rational choice. It is a defense against extremely bad experiences.

A personal example from a few weeks back. My SO booked a hotel for a weekend as a birthday present. We went there, it had a fantastic spa, dinner was delicious, the room great, clean, and so on. Individually designed, well thought out, friendly staff.

Breakfast came around and the coffee was abysmal. Really truly abysmal. What did we do? While eating breakfast we looked for a McDonalds, as we know for sure, that regardless where you are - you will at least find an okay and drinkable coffee at McDonalds. It is not a great coffee. And will never be. But the likelyhood is very low that you will find a shit coffee.

Marriott is basically the same for hotels. Or MotelOne in Germany. It is the power of brand - you get a solid 7 out of ten. And to be honest - when I am traveling for work, this is all I want. I want to know, that I will have a clean room, a bed that is good to sleep in. And the knowledge, that I will likely wake up rested the next day when I have to be at my best for my clients.

The risk of ending in a shit-hole got smaller because nowadays people write their experiences - but on the other hand, having seen how many of my reviews were being deleted by Google, Yelp, TripAdvisor and the likes because some lawyer requested it - I don't give a rat's shit for online reviews.