Answer:
You get many of me, but never enough. After the last one, your life soon will snuff. You may have one of me but one day a year, When the last one is gone, your life disappears.
Beautiful girls strut and sexy men 'do their little turn' on this.
Soldiers line up spaced with pride. Two long rows lined side by side. One sole unit can decide, if the rows will unite or divide.
Though I wander the earth, I am no longer here. I am pale and I chill everyone near. Who am I?
Runs smoother than any rhyme, loves to fall but cannot climb.
I am your mother's brother's only brother in law. Who am I?