Highly recommend this book on the subject: https://www.goodreads.com/book/show/99746.An_Island_to_Onese... (An Island to Oneself by Tom Neale). The guy spent years on an island in the middle of the pacific all alone (almost, he has pets and animals).

On the subject, I'll say that voluntary solitude is amazing, loneliness sucks. However, the number of people you interact with has nothing to do with either.

What matters isn't the number of people you meet or the amount of human interaction you have, but the amount of intimacy you desire and how much of that is fulfilled. With that said, the road less traveled is always harsh, humans are social animals; fighting nature is a tumultuous affair.