People have the privilege if deleting in order to be able to remove posts that ***need*** to be deleted.

The close system should be used first. This allows a poster to revise and reopen their question. And closing it without answers or positive score will see it automatically deleted a year later. Duplicates feed into a SEO system which deleting hurts.

Save your votes for things that cause harm.  
Leave the "does no good" for the system.