Ever since Apple redesign the iOS lock screen by removing the swipe-to-unlock gesture, you merely just need to press the Home button to wake and unlock the phone automatically using Touch ID. At times the Touch ID unlock the phone too quickly that you’d miss the Lock screen completely.
Lock screen can be useful for quick glance at the time and date. Swiping right on the Lock screen will get you to the Today screen where you can place some useful widgets such as latest stock price and currency rates.
Swiping to the left will get you quick access to the camera. It is this convenience that you might want to consider to get in the habit of pressing the Lock/Power button to wake your phone to the Lock screen. Give it a try, it might saves you time if you use the camera a lot.