By learning your cadences, you will achieve quite a number of things for your piano-playing foundation. It will help you establish a greater "feel" for every key, as well as an understanding of how the primary chords relate within the key.
Your hands will be learning the shapes of the chords, and your mind will develop images of the chords in every key. This will benefit your ability to read music within each key, as well as memorize and improvise (if that's what you like to do.)
Overall, knowing and mastering the I - IV - I - V - V7 - I progression for every major and minor scale will expand your keyboard awareness and your general confidence in your piano-playing skills. With these chord progressions as a part of your daily routine, the keyboard will grow deeper and wider in your mind and in your hands, giving you a better grasp of how music fits on the piano keys and how compositions are built within the scales with which they are written.
Someday, you may begin to see your understanding of the chords leading to some of your own compositions at the piano. A vast number of piano compositions revolve in and around these very chord progressions, and the more control you have of them (mentally & technically), the more you will find yourself inspired to try using them.
I usually have my students playing these as a part of the S.A.C.B. exercise routine, but occasionally it helps to just go straight through the chords, just like you will see in the videos. As you will see in the videos, you can start by teaching both hands to play the chords. Then, you should learn to play them with the left hand providing "octave roots". This will increase your understanding of the way chords work, as well as provide you with a more enjoyable sound as you play. The octaves add a nice, deep tone to the sound of the chords and make the experience much more pleasing to the ears.
If you are brand new at these chords, this video will help you get started in the key of C Major. Watch the fingerings closely for each hand and then practice until you have them mastered. Then, you will feel more ready to tackle the progressions in all the other keys.