Answer:
I am all around you but you cannot see me. I have no throat but you can hear me. Valued during summer but despised in the winter.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.
Travel a mile and I will change, travel a million and I will end as I started. What am I?
What is easy to spot but hard to find?
I belong to everyone. Sometimes make you happy, sometimes make you sad. I will never end until the day you do. What am I?
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.