[mpol]

Different crowds probably.

Not sure what the aim of cheating is, probably going from a rating of 1500 to 2000 and the status that it brings. In the end you still win 50% of the games, just against higher rated players.

Playing against a GM would reveal your cheating instantly, it seems. It's like robbing the police station :)

[Tenoke]

People like steamrolling. It's part of why higher rated players smurf (for theirs and/or their audience's enjoyment) and do 'speedruns' in chess and most online games with ranking.