There are many more creative ways that you can destroy your hard drive such as setting it on fire, cutting it up with a saw or magnetizing it. Simply scratching the hard drive disk and smashing it a bit with a hammer will get the job done
Why would you hammer your hard drive 


 In case you don’t want to use it anymore or you have confidential files
 In case you don’t want to use it anymore or you have confidential files
That made sense. 