another thing I thought of...

Even if calling with 72 off is a few % -ev against a given opponent, there are these factors to consider.

1) This style is more tilt inducing than any other style IMO.

2) This style keeps the outmatched opponent in the game longer and keeps him coming back later. It crates an image of the player who is using it as a maniac even if the player plays 100% perfect postflop and will result in opponet calling down much more with ace/king high etc.