Purpose - a). The reason for which something is done or created or for which something exists. b). Design or intend for a particular use.
Genesis 1:26-28 NKJV
“Then God said, “Let Us make man in Our image, according to Our likeness; let them have dominion over the fish of the sea, over the birds of the air, and over the cattle, over all the earth and over every creeping thing that creeps on the earth.” So God created man in His own image; in the image of God He created him; male and female He created them. Then God blessed them, and God said to them, “Be fruitful and multiply; fill the earth and subdue it; have dominion over the fish of the sea, over the birds of the air, and over every living thing that moves on the earth.””
Philippians 4:19 NKJV
“And my God shall supply all your need according to His riches in glory by Christ Jesus.”
When you understand purpose, it then makes sense why humans love to:
1 Thessalonians 5:18 AMP
“in every situation [no matter what the circumstances] be thankful and continually give thanks to God; for this is the will of God for you in Christ Jesus.”