It depends on who you're looking at. Are you looking at any human as an animal or just a single person? And more importantly, what's the meaning of a human's life to what? To Earth? To the universe? Or just to a single person like your parent or friend? I've recently started to realize that everything humans do on Earth is bad for Earth. We are kind of destroying our home planet with our greed and laziness. We are greedy and selfish animals, always looking forward and wanting the things we don't yet have, it's in our nature. So in a way, I think the meaning of a human's life to earth, is to destroy life on it. Think about it, what would Earth be like if there wasn't any humans? The gazelles wouldn't overpopulate, because then the lions would too (more lions=less gazelles). Same goes for other animals too. The Earth, no, nature, has a plan for everything, but humans. We humans destroy the ozone layer, we cause the global warming and we use all the fresh water (it's getting really low really fast and people don't even notice or care, the Arabic countries already have to buy oil tankers full of drinkable water from Finland for example, because they no longer have any). Oh and if you look at a single person, it's just like Forlorn said. TL;DR: We destroy the earth, meaning of life depends on what and who you're looking at and elephant_breeder writes too long replies. Peace and out. Jeezus.