Trash Novels at Airports

What is it about places of fleet, airports, train stations, etc., that help trash novels sell through the roof?

It’s not that the customer is different, that trash novel readers can only be found at airports, but that they’re in a different state of mind. Whenever I travel I am more willing to alter my habits, even dumb myself down, to ensure my trip will be relaxing and pleasurable.

Where else are we in another state of mind, more open to suggestion?