Allah Almighty commands us not to be stuck-up. He commands us to be laid back and down to earth type of people.
Let us look at Noble Verse 17:37 "Nor walk on the earth with insolence: for thou can not rend the earth asunder, nor reach the mountains in height."
"And swell not thy cheek (for pride) at men, nor walk in insolence through the earth; for God loveth not any arrogant boaster. (The Noble Quran, 31:18)"
Insolence, or arrogance, or undue elation at our powers or capacities, is the first step to many evils. Besides, it is unjustified. All our gifts are from Allah Almighty.