Hi my friend,
Welcome back!
I don't feel I belong here either or anywhere. I think that maybe we all feel this way or at least from time to time. Or maybe we think or feel we have to be perfect so to be accepted and then belong. I'm not sure about this feeling of not belonging but it's a very sad confuse feeling.
You have a very good heart. It's true what others have said about you that even when you are very down or hurting very much, you still give your support and compassion to others. Only someome with a great heart can do this. We need you as much as you need us.
Don't give up on yourself. Many here are walking beside you. Together we will make it.
Much love