Answer:
I dig out tiny caves and store gold and silver in them. I also build bridges of silver and make crowns of gold. Sooner or later everybody needs my help yet many people are afraid to let me help them.
I start new then become old. Start clean but be one dirty. I usually start big then become little.
I am rubber you can eat!
I cannot be felt seen or touched. Yet I can be found in everybody. My existence is always in debate. Yet I have my own style of music.
I stink in living but when dead smells good.
What age most travelers have?