Kicking leaves you momentarily on one foot, and for that moment you are in a very weak position. If you were to be swept off your feet, you would be finished. This is why lifting your feet off the ground is crazy.
More from Morihei Ueshiba
Shihonage is the foundation of Aikido. All you ever need to master is shihonage.
Permalink to quote #3 In a real battle, atemi is seventy percent, technique is thirty percent.
Permalink to quote #5 I am the Universe.
Permalink to quote #2