The wrong map?

In human geography class, on 9/19/18, we focused came across the topic of the Mercator map versus the Gall-Peters Projection map. We found out in the video that the Mercator map was not very accurate but still used in almost every public school in North America. Many countries and continents are drawn proportionally out of size to the point where if we would look at the real land masses, we may not recognize or it looks weird to us. For example, Greenland is drawn many times bigger than Africa which is not accurate. These maps were created a long time ago for sailing and were never updated. The maps show white territory much bigger than nonwhite countries but some schools are starting to switch. In 2017, some schools in Boston have switched to the Gall-Peters Projection map instead of keeping the Mercator map. I think that people should have switched to the Mercator map a long time because it is not accurate and people do not use it for sailing anymore.