"An Island to oneself" of Tom Neale

So, during my illness I occasionally (accidently, maybe?) found the book "An Island to oneself" by Neale. I have read it in one sitting. I could not stop. This book is an autobiography. During his whole conscious life, the main character, Tom, wants to live alone on an island without anybody. The first time it was when he was 50 years old. He have lived there 2 years and came back with a backache. The second time was when he was about 60 years old. He have lived about 4 years alone. After that he understood that he wasn't getting any younger and he decided to come back. Then he wrote this book about his adventures. 
I was impressed by his decision and his adventures. His idea was as hard as metal.
But then I read the memoirs of his daughter and his friend at the end of the book. Tom never spoke once about his family and his children in his book . After that I have changed my opinion. So, Tom said that the main purpose of his life on the island was to obtain of the freedom. Okay, but I am sure, that the value of freedom is zero, if you leave (лучше - abandon) your own crying teenagers on the shore and go forward you island alone. It seems to me that it is so harmful. My opinion is that if a person has a child, he should never abandon them during their childhood. Or just don't have them at all. It is his responsibility before God. So, Tom wanted freedom, but he was dependant on it. And as a result, the price was very high. Of course, it was his life. And he made his own choice. But does he really need it?