“Life” in itself has no purpose. It is a biological (and, oddly mechanical) apparatus. There is no point other than to continue the species and carry on genes.
This is an answer I wrote in this thread:
…Personally, I think it is in man’s best interest to pursue (scientific) knowledge, as that opens doors and answers the many riddles of life. I believe we (and all animals, for that matter) were born with a natural sense of curiosity, and is one of the only common traits we share. The further we delve into understanding what makes things work, or why particular things happen – the better off we’ll be, both physically and mentally.
In terms of why we exist in the first place, or what our existences mean… haha. Scientifically, we live to continue the species, to reach out in our environment and spread our influence, ensuring humankind lives on. Philosophically, I believe we exist to explain why we exist. As I said before, we are burdened with curiosity and I personally believe we exist to question ourselves, the world around us, our motives, the future… whatever.
In a sense, I believe mankind’s goal in life is to understand why he lives.