Bottom line is that smartphones do provide a certain level of convenience and definitely a small break from your smartphone. They are also much cheaper than what they used to be so getting on and experiencing the perks is a whole cheaper than what they used to be.
Furthermore, they can be paired with several other devices such as fitness trackers, high end chest heart rate monitoring devices to gauge comprehensive data on several aspects of your health, and some even allow you to pay for groceries at stores such as Whole Foods.