Yes, I read about it. How very sad.
We can certainly do a lot more research into the causes of alcoholism. There is a genetic component.
Secondly more families could make sure drink is not part of every day life. There is no need for most people to drink alcohol every day. Plenty of different cultures in the UK don't drink at all and manage happy lives.
Thirdly we can try to make sure fathers are very very involved in family life even after a split.
However accidents happen in all sorts of families whether there is alcohol or not. I bet few of us could be sure that something like that could never happen - that a toddler could not have got its hands on the baby and hurt it. We went into the older two's bedroom when one was 1 in her cot and the other in a bed next door (she was 3) and the older one was hitting the 1 year old over the head with a big plastic toy. We heard the screams. The little one couldn't speak by that age so just pointed at her head and rubbed it. No harm done thankfully. I also shut my 1 year old son's finger in the door and the end came off although it was later stuck back on in hospital - no lasting harm done. I had no idea it was in the door at the time.
You read cases like this and think there but for the grace of God go we.