Who said you're alive? Maybe this is all one long dark comedy and the life you would like to think you have comes at the end of your existence. Or maybe it doesn't. Were you expecting a clear-cut answer like something akin to a biological cycle? There are plenty of organisms out there that are never born, nor die. Some bud from others as hydra do to produce new hydra, or the plan aria when it develops into a polyp before the medusa form f the jellyfish is formed, This is an asexual part of reproduction. So just the biological explanation to the meaning of life is quite shallow. And everything has been reduced to DNA and genetic expression so should the meaning of life be related to that for a few generations until somebody else discovers a new molecular reason behind life?
It only goes to show how so many humans think only of themselves and their inventions when the question of why we are here comes to mind. Many people cannot go beyond the argument of scientific proof to sate the reason for being here: that we are here as a result of reproduction and the recombination of chromosomal material between parents. Isn't there any room for a spiritual input to our being here? Perhaps there was something like mythical mountain with an active deity that would receive questions about our reasons for living? Are we the superior beings that we like we think we are? Maybe there is something behind the ability of cats to recognize illness that would shed light on a meaning. What about someone dreaming of caressing his pet during his sleep and then he wakes up with dog hairs under his nails. The dog had been dead. Is life a balance of good and bad spirits that move us one way or another? Some say we should raise our spirits to stay on the good side. Our lives could be nothing more than a test to see whether we can keep to that side.