For what reason does my wife of 13 years want a divorce?

She wants to stay friends, and live together, she wants a full divorce.<br><br><br>Don't say money. She's a good earner and has a higher networth than me.<br><br>I am a SAHD.<br><br><br>If it's not money, then what?<br><br>How are we going to live together and be divorced?<br><br>She has never had to support herself financially, only when she was young and single.<br><br>What is happening?<br><br>She cannot articulate her reasoning.<br><br><br>Is it her age? (40)<br><br>What do you think?<br><br>What I know, is that my life is about to take a massive hit.<br><br>What do I do?