What are disadvantages of automated testing tools?

Automated tools have following disadvantages.

Usability Testing:
Usability of software can not be automated so automated tools cannot rate the usability of an application.

Cost:

 Usually these are licensed so automated tools are quite expensive

Programming knowledge required:
 To customize test scripts according to test requirement.
Test maintenance is costly: In case of playback methods.
Even though a minor change occurs in the GUI, the test script has to be rerecorded or replaced by a new test script.