No one is ever useless because there is no use to life. Life happens as a natural process such as a tree will grow with enough light, water and nutrition. So, feeling you are useless is just a mindset imposed upon your mind by other people. Any purpose of life can be proved to be useless.

Human life is certainly divided into different periods, and if you pay close attention, you can see and feel as one-period ends and another opens up just like the beginning and end of a movie. Very clearly, it shows and evokes a sense of melancholy as you know things will be different, you cannot redo anything now, only the future awaits.

This is a summary, and it tells the main ideas of this writing.

Climate change is now more apparent than ever. People have to constantly deal with various sudden shifts in the weather patterns.