Beginning of the end

Married 10 years. Db 10 years. He moves out in 2 days. I am so so so broken. I am the one who asked for this. I am the one who hasnt slept since. The tears wont stop. He is asleep. I am sure he isnt happy either. But still. I feel like I will mind this more than he will. why did I wait so long. Why cant I continue with it for longer. We have traveled to ai many places together. (I remember being lonely on all of those trips) I checked out more and more, and by now he does so much more of the front end for the baby. He reads to baby, puts baby to bed, brushes baby, often feeds the baby. Why am I ripping that apart. They love each other, and now they wont be able to see each other as much, as naturally. For what. Look at the dating over 30/40 subs. Everyone is lonely and struggling no one finds love anyway. If I have to alone forever then why am I doing this. Maybe people's libidos change. I'll be 38 soon. Maybe I anyway wont feel as horny in a few years. Then why do this. Why not let this continue.