Well there has always been some one that has existed before our births, local would be parents, relatives, we needed their care to grow and learn to become developed into stages of life, to reach Adult hood.
But that is the habit of arrangement in most human families.
But even before this arrangement was another that had to do with caring for all humans from a heavenly domain , our care was in the hands of the one who created all things,
Col 1:16 because by means of him all other things were created in the heavens and on the earth, the things visible and the things invisible, whether they are thrones or lordships or governments or authorities. All other things have been created through him and for him.
So here is why we are here , because of him , Michael, earthly name Jesus we were created for him.
And we are loved by the Father who created us all including his First born Angelic Son being Michael.
We were to be a complete family in every sense , even though satan caused accusations against the Heavenly Father
So that he can receive worship for himself.
That is the period we live in where satan is
testing all creations of God.
How are we doing, are we doing things our way , and not the Father's way , he has not interfered to allow your free will of choice
but he also know the inner heart , what kind of person you really are.
All will be given a fair and righteous judgment.
And then the real life will begin.
This life is not all there is.
Just a stop on the road to the real destination here.
So to answer your question
Do we need parents, yes! they are vital.
Do we need a Sovereign who created the parent arrangements yes, because he knows
how all things work while we are trying to figure it out.
We may be Adults , but there is plenty we do not know that only God can answer. And we need to know to keep living.