Problem: Users commonly wish to share data with their team members, but reports with many filters can be difficult to reproduce and share with others while abiding by security permissions. This cause...
Data Security does give the ability to restrict data so viewers may only be able to see what you wish, but this functionality is intended to allow a 'view' of data as opposed to restrictive access.
Data security is also only available at an admin level whereas creating optional filter views would reduce the number of dashboards needed and would be available for viewers of the data to create and share their own views of the data with multiple filters being easily applied to other users in their groups.