I have never ridden the Vegas monorail. I have been on the trams that go from Mirage to T.I. and back, the one from Bellagio to Aria to Park MGM and back, a few times on the Excalibur to Mandalay one too, because those more or less follow the path of the Strip and have convenient pick up and drop off locations. Plus they are free.

When I am in the vicinity of Bally's or Paris, and headed south, I am headed to Venetian or Wynn, and the monorail doesn't stop at either, so it would not occur to me to take the monorail. I think the monorail is more suited to convention traffic headed to the Las Vegas Convention Center, especially from the MGM Grand.