You're question:
"When I look at your heavens, the work of your fingers,
the moon and the stars, which you have set in place,
what is man that you are mindful of him,
and the son of man that you care for him?" (Psalm 8:3-4)
The answer, twofold:
"So God created man in His own image,
in the image of God He created him;
male and female He created them." (Genesis 1:27)
"God is love…We love because He first loved us." (1 John 4:15)