Why do people fight for freedom?

Is freedom a necessity beyond comprehension? Or; does it satisfy the needs of yourself and your kind?

Do people want freedom to enable them to have a purpose in the world?

Won't atheists deprive themselves of food and sleep to make their mark on the world? If they believe that death is the end; why would they care about their reputation after death? Shouldn’t they focus entirely on self indulgence? The only scientific excuse would be to attract a mate, or to make money. Do you find brainy scientist attractive? Do you think that being a brainy scientist is the best path to fortune?

People in the past posted good comments, were you? I need your help; this is a major part of my puzzle. I am trying to accumulate prove for this theory.

According to science every organism wants to serve itself and its kind, I could only think of two conclusions 1) Science has proven that humans are supernatural, or 2) The supernatural has scientific implication in nature, particularly affecting human. Can you answer this any other way?

Please!!! Help me discover other human desires which are supernatural, or explain to me how the above is natural.

If this post is wild, consider that I had a drink before writing it. If not, it proves I could think while drunk.