Why do we have desires?

So, incompleteness of the Ego generates desires, and its incompleteness is due to its wrong identification – the limited body, when it could have remained as the infinite consciousness.
The Ego arises from consciousness only as a belief ( just as a wave arises out of vast ocean, and then forgets about the ocean).
Ego means I’m separate from the rest.
Considering itself as something separate, creates “I” (which is only a thought, a belief), and “I” leads to “You”.
This way duality takes place in the non-dual consciousness.
In duality, everyone is incomplete, and everyone is fighting, competing, and trying to survive at the cost of others- whatever it takes.
Over many lives, this becomes a FACT for each Ego, and it forgets its true self – the consciousness completely.