Answer:
I have a strong affection for belly buttons.
I help boats park
I break down buildings, I crumble mountains but you can't see me. What am I?
You write on me and secrets I can keep in places never seen. I spin like a top. Though stiff as a board, I'm often described like a mop. What am I?
I may be made of metal, bone, or wood and have many teeth. My bite hurts no one and the ladies love me. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.