I highly recommend that you take the time to read this article by Hal Herring, and the subsequent response by U.S. Congressman Dean Heller. Both articles provide some great insight into the controversy that exists over designating areas as Wilderness.
I am all for protecting lands as long as you are providing reasonable access to those lands for the recreation and the enjoyment of the people to whom those lands belong once they are federally managed. That said, I can sympathize with some of the counter-points that Congressman Heller points out in his article, specifically that being able to manage public lands for the overall health and habitat of the ecosystem is often better for the people than those Wilderness lands that remain truly untouched. In then end, my opinion is that the best option of land management, for both the good of the land and the good of the people, is a diverse array of management strategies, protection guidelines, and varying governing bodies of oversight at both the state and federal level. Where land is to be deemed as wilderness it should continue to be protected at the federal level, but it is also important that the states have rights to manage other lands for the good of their local ecosystem.