Hiya Arsene. Hope you have enjoyed your birthday. Sounds as if D8 has made it more enjoyable. I too experienced a "left behind birthday." Not easy, but I survived. Even had some fun too with the kids. They are wonderful anchors; and I'm hopeful to have a better one next year.
The spouse that says they prefer to die first, is the selfish one, so that they do not have to deal with the pain of loss. For us DBers, we are kind of priming for that one way or another. 8)
Glad you're trying to remain focused on you and D8, keep the PMA; and of course I also hope W's "shift" becomes even stronger in the right way for you and your family.