^This. You are putting a load on a bearing that is not supposed to be loaded for any length of time, and at much higher rotational speeds and torque loads to boot. It's only meant to carry it intermittently. Not to mention you are wearing out the pressure plate belleville spring a well. The fingers are not supposed to be loaded like that all of the time, even if you are barely pushing on it. That and you run the risk of inducing clutch slip if you ride it any heavier.
2011 GT 6MT (Cookie Monster) - The 1/4 life crisis. Brembos, 401A, drop top, Grabber Blue.
1974 Dodge Challenger - The money pit. 408 SB stroker, Megasquirt 2 EFI, 904TF, 3.91 gears. 16MPG and 520HP goodness
2004 Hyundai Tiburon - The winter beater.