Few Points are:
It is a great field to work in because:
You get to know the reason for the particular properties exhibited by different substances and why they do so which gives us a better understanding of our surroundings.
It gives us a freedom to create new substances and develop the existing ones.
It helps us to understand some natural phenomenons and reason for their occurrence ,thus gives a way to possibly defend them or at least prepare for them.
Last but not the least it gives us an opportunity to give back something to humanity by developing new ways and possibilities through existing knowledge.
hope it helps. all the best.