Still in shock...wife asked for separation

I'm 42 (m) and my wife is 34 (f), earlier today my wife of 8 years (together for 15) asked for separation. She said I've become too much of a best friend and she can't see me as a romantic partner anymore. We don't really fight or argue, we share the load of the house work equally, and we still have so much in common. The biggest issue is that due to medical reason, (on my part), we've been unable to be fully intimate for several years. We would still fool around and do what we could from time to time but it definitely wasn't what she really desired.

She wants to try a separation but seems pretty intent on going through with the divorce. we both don't really have any family and very few friends where we live. I'm having a hard time imaging a day without her in my life let alone the rest of it. I'm scared my life is over. I just wanted someone to talk to and didn't know where to go...