Here is an article from Sierra Mountain Guides that should be read by anyone who climbs Mt. Whitney or who is thinking about it. Read it if you care about human impact in our wilderness; ignore it if you could care less. This article is from professional guides who are on Whitney a lot and know of which they speak.

http://www.sierramtnguides.com/talkin-sht-about-mount-whitney-can-you-handle-it/