It's obvious to me that nature created clams and fish to live on this planet for as long this planet can stand them. It's also obvious to me that nature created us to spread life to the universe, and this is mankinds trial run. Thats obvious about life, to me anyway. 
What is not so obvious
It's not obvious how we get through this life with all of it's little details to deal with.
Today the neighbor's dogs just broke the fence again, on both sides. They are pitbulls and rotweillers running around all over my backyard. So, should I shoot them, pepperspray them, water them or feed them. If I spend $10,000 for a block wall fence all the way around, the neighbors will get greyhounds, and they'll jump the wall. So I need something like a stadium's Dome over my backyard! Bet they'd get digger dogs! Hmmmm.