Why do those who advocate monorails always choose to use a photo that show limited structural supports, and never a monorail station?
This is more like what you'll see hanging in the air at the stations.....
Monorails can get real ugly if you include the supports needed to keep the beam and stations in the air in the photo -- they don't float in the air magically. The above photos are far removed from this glamour monorail photo which some professional had taken the time to crop out all the ugly supports.....
Can you imagine several aerial monorail stations every 1/8 to 1/4 mile apart lined up in a row over Congress completely obscuring the view of the Capitol from the downtown riverfront? There would be a public outcry over the blockage of sight lines.

The Las Vegas monorail was hidden behind the casino/hotels parking garages, not in front of the beautiful entrances. The Seattle monorail has just two stations where the line terminates. Close to downtown, the station is built onto a side of a building several stories up. At the Seattle Center the station is built at ground level, not several stories up. In both cases in Seattle efforts were made to reduce the footprint of the monorail stations to bare minimum. The Seattle monorail was built as a technical showpiece for a World's Fair. In Las Vegas, that attempt wasn't even considered, as it was built to move people in a real transit environment.