The Islamic civilization dealt with its Creator in a perfect way; putting the relationship between the Creator and His creation in the right place. Whereas other human civilizations failed to do so, as they disbelieved in Allah and associated His creation with Him in belief and worship, and ascribed to Him what does not befit His majesty and dignity.
This question is the result of a misconception about the Creator and comparing Him to the creation. Such misconception is refuted by mind and logic, for instance:
Islam encourages orphan sponsorship and urges the sponsor to treat the orphan the way he treats his children; however, it maintains the orphan's right to know his real family to protect his right in his father's inheritance and to avoid mixture of lineages.
As for the angels, they are great creatures of Allah. They were created from light and have a natural disposition to goodness. They obey the commands of Allah Almighty, exalt Him, and worship Him without ever getting bored or tired.