Because... as is pointed out regularly on these forums... it is something in the contract gained at the expense of something else of value.

Looking briefly at a few online sources, while restaurants in Guam are more expensive, that's not really an indicator of "cost of living" for residents. However, Bay Area housing costs appear to be far and well above anything in Guam.

Saying "if you want Guam, then bid it" is akin to those that say there shouldn't be anything in the contract to better help commuters: "if you don't want to commute, then move to a domicile".

Whatever... no dog in this fight. I just find it interesting that United's Guam gets paid so much to go there. If they got rid of it, people would still bid it, so it cost the pilot group as a whole "something" to have it.