I know well that "no one cares if or when I come home" blackness--it is horrible.
Depends. It was a big hole for me, for a while. Now I feel differently. (I mean, when I don't get ambushed by loneliness.)

Now I feel like, hey, yes I am lonely, but it is not desperate. I have the freedom this evening to do what I like. Go for a workout. Go out to a late dinner. Watch a movie. This is not what I would have chosen. But it gives me ME time, which prepares me to be more giving when I am with my kids or other loved ones.

we all make the best of it!