"And God saw the light, that it was good; and God divided the light from the darkness." Gen 1:4
From the beginning God divided the visible from the invisible. He made things that can be seen and things that can't be seen. It is good that not everything is bathed in a bright light all the time. Night serves well as a time to rest and revitalize.
This division seems to have been made for creations sake because it does not apply to God Himself.
"And there is no creature hidden from His sight, but all things are naked and open to the eyes of Him to whom we must give account." Heb 4:13
As men and women who know God and are reborn by His Spirit we have become creatures of light and are destined for greater and greater illumination.
"For now we see through a glass, darkly; but then face to face: now I know in part; but then shall I know even as also I am known." 1 Cor 13:12
"We have also a more sure word of prophecy; whereunto ye do well that ye take heed, as unto a light that shineth in a dark place, until the day dawn, and the day star arise in your hearts:" 2 Pet 1:9
Ultimately our habitation is one of great illumination.
"Let not your heart be troubled; you believe in God, believe also in Me. In My Father's house are many mansions; if it were not so, I would have told you. I go to prepare a place for you." John 14:1-2
Mansions are built to be seen after all.
Ultimately all will be visible to us bathed in in light that comes directly from God Himself.
"And there shall be no night there; and they need no candle, neither light of the sun; for the Lord God giveth them light: and they shall reign for ever and ever." Rev 22:5
There is great comfort in knowing that everything hidden will one day be revealed. It is good that many things are not shown to us now and that one day they will be. As we draw near to God by beholding His Son things do become clearer and clearer. Christ Himself becomes our place of rest preparing us for what is to come.