Earthly life is premeditated way before it is manifested.
Many invisible hands are helping (or squeezing) you to go along your path. You are never alone, like it or not.
We do get the illusion of seclusion, and some suffer from it a lot, and there are many who desire it.
Solitude is serene and sublime when you choose it and it is not forced upon you.
However, we are built up of tiny little soul-cells of those whom we have always worked with, and whom we have always loved: our soul siblings and soul twins are there, right there inside of us. We do have our core – our unique entity – too, but the colours and stripes of others are inseparable from our existence.
Thus, the illusion of being alone is merely an illusion, maybe, the greatest one.