But map should be accurate in the first place. It's not like you can just ignore things you don't want to see there just because they are naturally to big and take up too much space
All of them are wildly inaccurate in terms of proportions and distances. But notice - almost all are oriented to people not very familiar with that area. Certain big monuments may be left out (the highway that runs by water park, the big electric station across the street etc.
http://www.bbc.com/culture/story/20150720-the-london-undergr...
https://tfl.gov.uk/corporate/about-tfl/culture-and-heritage/...
I'm trying to think of this not from a prescriptive position, though, but thinking of "why do people like Mercator". And I believe that people like the perceived efficiency of Mercator, in the sense that you can make a world map that fills more of its area with land mass.
Or, addressing your comment more pointedly: yes, yes you can. You can ignore the Pacific Ocean on a world map most of the time. :D