http://news.bbc.co.uk/1/hi/england/7364628.stm These religious fanatics, you get the idea that they are isolated from normal life, that their obsession is a substitute for normal human affection and family life.
Now we have a young man, married with a little baby, videoed cooing over his tiny daughter "like any doting parent", then explaining to her how she had to grow up without him and look after her mother for him, because he had to go off and kill himself while blowing up dozens of innocent people.
I thought about soldiers as a parallel, but it's not the same thing. Soldiers may kill civilians, but they don't make a point of it.
As a Londoner, on 7/7, I was just livid. I was actually taken aback by how angry I was. I don't think anger is a very positive emotion so I've tried to think about the whole thing in a more analytical way. But I just can't analyse what was going on in this young man's mind.