Freek Lijten, a developer at Schiphol, makes the case for just setting a sane default value instead of throwing an exception when invalid input entered the application.

I didn't think much of this, but I've seen a major drawback lately while working on a site that is a bit bigger than I was used to. With over half a million visitors a week and lots of scrapers, bots and other stuff visiting, these exceptions and fatal errors clog up logging quite a bit. Not to the point that we can't handle the volume, but it generates false positives in monitoring channels and it is something we do not want to act upon anyway.

http://www.freeklijten.nl/2017/01/04/Sane-defaults-over-Exceptions