Everything has to come to an end. There is no such thing as immortality, so even Gods must die some day. Some time in the future Earth will die and all living things with it, unless we find a way to live on another planet, but I doubt that it's possible. And when I say everything, I mean "everything" including the universe, so we still have to die some day.
There is no such thing as a 2-D shape. Take apiece of paper. It's very thin, but it still has a height. If there is no height, then the object doesn't exist. Here's a math equation to prove that:
2x4x0=0
2 is the width, 4 is the length, and 0 is the height. when we multiplied them to find the volume, we get nothing.
Nothing can be explained.
Why is 1+1=2? Because the value of 1 is 1 less than 2 and the + sign is used to add values. Why is the value of 1 1 less than 2 and why is th + sign used to add values? Because the guy who created the number system made it like that. Why did the guy who created the number system make it like that?
And you have to keep explaining forever and ever and ever.
(This isn't really a strange thing, it's a fact that most people ignore.) Everything on Earth is made of materials of Earth. We are all part of the world. If we hurt others, we hurt ourselves. If we destroy the world, it will destroy us. Learn to charish everything around us. Teach your children to do the same. All is one, and one is all.