Questions:

What is sadness. We know it's an emotion but why? do we get sad. and why does it stay with us..? here's ANOTHER question: I myself believe in god. But what made this world why is EVERYTHING like so perfectly planned to where we have just ENOUGH oxygen and HOW the water cycles move and EVERYTHING is SO perfectly made to where we are ABLE to live and survive?. And everyone KNOWs we have mass but what if there WASN'T gravity.. I mean I know we would float around but what about the people who are standing right side up since we have weight would we float away and way NOTHING or still be standing.. Also... what's out side of the universe are there ACTUALLY other life forms out there? And one LAST thing... If we had no gravity and all how would we know when the world was right side up if there's no top and bottom to our universe or galaxy?