Answer:
They belong to me; they belong to you; They can make you feel happy or make you feel blue; They never end until the day you do.
Hoofed frolicking.
What force and strength cannot get through. I, with a gentle touch, can do. Many in the street would stand. Were I not a friend at hand.
What goes around the world and stays in a corner?
I have legs but never walk, I may have flowers but no soil, I hold food but never eat.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.