I don't think immediate tragedy is a very good source of art. It can be, but too often it's raw and painful and un-dealt-with. Sometimes art can be a really good escape from the intolerable, and a good place to go when things are bad, but that doesn't mean you have to write directly about the bad thing; sometimes you need to let time pass, and allow the thing that hurts to get covered with layers, and then you take it out, like a pearl, and you make art out of it.
Neil Gaiman"Only write what you know" is very good advice. I do my best to stick to it. I wrote about gods and dreams and America because I knew about them. And I wrote about what it's like to wander into Faerie because I knew about that. I wrote about living underneath London because I knew about that too. And I put people into the stories because I knew them: the ones with pumpkins for heads, and the serial killers with eyes for teeth, and the little chocolate people filled with raspberry cream and the rest of them.
Neil Gaiman