Do you need a Roles package?

I have always wondered this. In the last 5 apps I have done there are really only 2 roles: admin and subscriber. There are never any permissions since most of what you can do as a subscriber is determined by Cashier (your subscription). In this scenario, does it make sense to just add a role column to the users table? Seems like it would be better not to add in more relationships and packages if you dont need to.