Answer:
Runs smoother than any rhyme, loves to fall but cannot climb.
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
I have many feathers to help me fly. I have a body and head, but I'm not alive. It is your strength which determines how far I go. You can hold me in your hand, but I'm never thrown.
If a man carried my burden, he would break his back. I am not rich, but leave silver in my track.
What gets closer when you blink?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.