Life on Earth as we know it is always evolving. As we know it, it will not be in 100 years. Just look at the lifes of people and how they constantly change and adapt their social norms, values, attitudes and you'll see it.

Look at the evolution of everything you know. The world is changing. And for you to keep it the way you know, you must die. Death kind of puts a milepoint in the world as you know it. You know - the world before it and after ...

Preserve that what is dear to you.