Because I'm from the UK, and most people I know here store boxes of eggs in the fridge. That's how we've done it for decades, and that seems to be the 'norm' where I live. Certainly never seen any eggs laid out in a bowl on a table or worktop.
Maybe it's a regional thing here?
Edit: Just checked online a bit. Seems like it's a matter of individual opinion here, based on this Guardian thread:
https://www.theguardian.com/notesandqueries/query/0,5753,-26...
The Daily Mail run a 'study' about it:
http://www.dailymail.co.uk/news/article-2421530/So-eggs-frid...
And there's a Yahoo News UK article saying not to:
https://uk.finance.yahoo.com/news/never-put-eggs-in-the-frid...
Certainly doesn't seem like a unanimous difference between countries.