there is no greater meaning in life. you were born to reproduce. that's all. the cosmic design does not intend for you to be anything more than a sack of cells that passes on part of itself to an offspring. all this elaborate nonsense of human "society" is just a mutation gone awry.
and remember this... human civilization has been around for a short time in the scheme of life on earth. other life forms lived and died after MILLIONS of years of existence. humans have only been around for 100,000 years and their complex societies have been around for less than 10,000 years. no one has said that our way of life will be an evolutionary advantage. our current way of life may very well lead to our extinction. we would not be the first species to use up all its resources and die out.