Answer:
There are two meanings to me. With one I may need to be broken, with the other I hold on. My favorite characteristic is my charming dimple.
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.
Weight in my belly, Trees on my back, I travel fast in my place, but feet is a feature I lack
Iron roof, glass walls, burns and burns and never falls.
I am nothing but holes tied to holes, yet am strong as iron.
I have feet on my head
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?