I have known being alone for very long periods of time and later in life, marriage and family. It was quite a transformation for me, and I stressed out big time in advance. As someone who knows and enjoys solitude, I found my early morning circadian rhythm to be advantageous.
When I want solitude, I go to bed early, get up early and write, write, write. That there is my solitude. And I still have my family to watch them grow up and old with me. It is possible to have both worlds, even in the same house at the same time.