The Lord God said, “It is not good that man should be alone. I will make a helper suitable for him.” (Genesis 2:18).
We are not made to live alone. You don't have to believe that scripture to understand that. We examples of that in all of our lives. One of the worst punishments, in fact, in prison is solitary confinement. Being without someone around you is a PUNISHMENT, so why would you imprison yourself?
In media, there is ample examples, also. Right now, I just finished the new season of The Umbrella Academy (very good), and being without her family almost drives Allison crazy. The same is true of number 5 in the first season. He was separated from his family for decades, so he develops a relationship with a mannequin. In I Am Legend, Will Smith does the same thing. I haven't seen Castaway, but from what I gather Tom Hank's character does the same with a Coconut, and Doctor Who does it with a robot head when defending the town of Christmas in a big special.
People need intimacy or closeness with.... someone. We always present intimacy as a physical act, but that act... if it really is intimacy... is the result of shared vulnerability, care, and trust. It is the harshest penalty for divorce that we starve ourselves of that benefit in the journey to be "healed" when you can never been healed if you are alone. You are only deepening the wound. We should not wait to be healed, but find someone with whom we can mutually...heal, together.
Companionship is a good thing, and I believe it is the ONLY way we will EVER find happiness.