My take ...

Title switches are an instant ticket to the main event. Back-in-the-day, a title switch was headline worthy. Over time, the title lost meaning and just became a cheap and easy way to build a "star".

The following folks just didn't deserve it, but got the belt due to circumstance over the last 3 years:
-- Jack Swagger
-- Alberto Del Rio
-- The Miz
-- Shaemus (first run during 2009)
-- Christian
-- Dolph Ziggler

Leaving the belt on CM Punk is restoring credibility to the title. The WWE is rebuilding their title and attempting to make it special again.