WHY AM?

In the screen shots below the signal being received had NO recovered audio. Note the lack of any visible sideband information even though the carrier is almost 20db above the noise. If this were an SSB transmission it would be a FB signal. You need at least 25 db carrier to noise to be able to copy an AM signal. SSB is at least 16 times more efficient than AM, so the question is WHY do we do this???