A recently post TED talk by author/journalist Andrew Solomon.
Wow.
“…many people were astonished and said, ‘but how can you decide to have children in the midst of studying everything that can go wrong?’ and I said, ‘I’m not studying everything that can go wrong, what I’m studying is how much love there can be even when everything appears to be going wrong.'”
http://www.ted.com/talks/andrew_solomon_love_no_matter_what.html
 “I don’t accept subtractive models of love. Only additive ones.”