What is the role of mankind? If we look into this Parsha, we will find a combination of answers:
And G-d said, “Let us make man in our image and likeness. Let him dominate the fish of the sea, the birds of the sky, and the animals, and all the earth — and every creeping thing that creeps upon the earth” (Bereishit 1:26).

Here, the human’s purpose is to control, to conquer, to harness the forces of nature. Without the human in this role, these unchecked forces might run wild — the most benign result would be an absence of positive development, while the most cataclysmic result could be the destruction of Hashem’s creation. Man is therefore “put in charge” in order to ensure the future of the world. Ironically therefore, his mastery is also a kind of servitude to other living things. Perhaps this is why he is forbidden (in verses 29-30) to eat their meat. Only his resemblance to G-d, his “tzelem Elokim,” elevates him above other creations.

A later account of the creation of man adds another dimension to his purpose:
And Hashem G-d took the man and placed him in the Garden of Eden to work it and guard it (2:15).

Here, man’s purpose is to cultivate, to develop, to extract creation’s potential without wasting its resources. He is commanded to be creative, and this requires him to understand the fine distinctions that exist in the world around him. Perhaps it is for this reason that he is also commanded to exercise discrimination in his food, eating from all trees except for the fruit of the Tree of Knowledge of Good and Evil (verses 16-17).

Time and again, humans demonstrate their capacity for utilizing the environment creatively, thus fulfilling their mandate to emulate Hashem. After disobeying Hashem by eating the forbidden fruit, the man and woman, realizing they are naked,
Sewed together fig leaves, and made themselves loincloths (3:7).
Hashem shows them how to improve on this by making them leather garments (verse 21). The act of human reproduction is understood by Chava as a partnership with the Divine (4:1; see Rashi). Their children are essentially defined by their professions, which parallel the two accounts of man’s creation:
Hevel became a shepherd, while Kayin was a worker of the soil (4:2).
Later, we learn of the development of other crafts. Six generations after Kayin are Yaval, the ancestor of all those who live in tents and keep herds, . . . Yuval, ancestor of all who play the harp and flute, . . . [and] Tuval-Kayin, a maker of all copper and iron implements (4:20-22).

Mankind continuously improves on earlier developments, as taught in Berachot 58a:
Ben-Zoma used to say: “How many labors did the first Adam need to labor before he had bread to eat? He plowed, sowed, harvested, made sheaves, threshed, winnowed, refined, ground, sifted, kneaded and baked, and only then did he eat. But I wake up and find all these when it is completed before me. And how many labors did the first Adam need to labor before he found clothing to wear? He sheared, whitened, combed, spun, wove, dyed and sewed, and only then did he find clothing to wear. But I wake up and find all these when it is completed before me. All the craftsmen persist in coming to my door, and I awake and find all these before me.”

R. Avraham Yitzchak haKohen Kook comments on this (Ein Ayah II:286, p. 370):
“In terms of the division of labor that is required for the work of settling the world, the differentiation of personalities is necessary. Therefore, the Holy One Blessed be He suits each person’s profession to him (Berachot 43b). One person will incline more towards the material and simpler needs, such as bread to eat. Various occupations are related to this, each of which requires a specific predisposition in order to define it and designate one person to be devoted to it. For that predisposition his soul must be distinctive and suited to it, and by means of it a change will be produced in his soul’s traits and qualities.

“All the more so is this true of the occupations that are more distant from each other, such as the desire to providing human needs like clothing. In these, beauty and ethics are combined with the material goal of gravitating toward even more distinct and refined talents. This distinction leads to distinctions of tendencies, traits and qualities.

“And what further shall we say of a profession that develops into an art in the way that life unfolds into those things that serve only to expand man’s mind, such as all the arts of beauty — drawing, music and the like? These are skills whose distinct talents are impossible to produce except by means of differences in personality. So, how can a person, for whose needs are required many different and distinct qualities (including many alternatives of mental abilities) imagine that it would have been better for the world if all people would resemble him in qualities and feelings? From this evil thought comes impatience, intolerance and misanthropy.

“Therefore [Ben Zoma] expressed his appreciation for each person by focusing on the primary needs that differentiate those who accomplish them in all their ways. Together they complete the function of humanity: in the physical, “bread to eat”; in human necessities and ethical tendencies combined with physical goals, “clothing to wear”; joined with the talent to enlighten the mind and thought, in the skill of carpentry and design, for the complexity of life.

“ ‘All the craftsmen who persist in coming to my door,’ bring peace of mind and enlightenment into my private world. Therefore, I will love all of them and honor each of them.”

Man’s purpose is to simulate Hashem’s creativity, which leads to blessed human diversity, social and technological progress, and peace.