Push notifications inform you about updates, new content, special offers, or your order's status. If you want to be reminded about your abandoned carts, new features of an app, or a task you forgot to complete on a website, then yes, you should.  Also, you can customize your notification settings and choose the specific types of notifications you want to get. Or, you can set limits for the number of notifications you get daily. Don't worry, opting-out is just easy as opting-in.