Why is life the most thrillsome and the most fabulous as well as the most exciting and thrilling journey you'll ever get on?

Why is there no such thing as more thrilling and as more saddening than life itself? Why is life the most eye-opening experience you'll evet get to live and experience?
Why can life be just as much the saddest thing you can go through just as much the most magical thing in the universe? I'm guessing it's all part of life. Why does life makes you meet incredible people sometimes and other times not so much?