Great post and questions. I have little spaces and glimpses of feeling 'at home' in my body, with myself, where I'm at, etc. But these feelings were only really created in isolation as a kid...either fantasy or really wandering out into the woods on my own. Nature feels like it includes me...it's a good, connective sort of feeling to the world, so I live near the edge of the woods. I like Thich Nhat Hanh's book "Your True Home". It's a book of short meditations that remind me that my "true home" is actually right where I am, and in the present. I've had to work a lot on being okay in my body (private lessons in yoga or other forms of gentle movement, safe and structured meditation groups, and somatic-focused psychotherapy).
I think a big part of feeling "homeless" (if we are talking about it in this sense, though I have felt literal homelessness too, however briefly, and the feeling did ring well with the deep sense of homelessness I always felt), is that feeling of not having a "self", of not feeling myself as existing in my own body or my own space...that great disconnection. That has gotten better. I don't know if I will ever feel "at home" in close relationships, but I do try to nurture some friendships and appreciate that I might find ways to be 'at home' that are more yogi or monk like vs completely avoidant and isolative. I do feel a strong connection to the natural world, art, music (I'm generally very introverted on top of whatever troubles trauma created).
I was in the hospital a long time in early childhood, on a couple occasions, and did not have a very caring mother...scary and abusive, but I often wanted to placate her or get some sort of good connection from her. She shut me out perhaps because of her own early sexual abuse history, and maybe my reminders of that. She thought every mistake, misbehavior, crying, even totally normal need was disgusting. Her feelings of disgust spilled out all over the place. I don't know, but the shame was horrid. I still have a hard time speaking or swallowing around her sometimes. I get almost paralyzed and try to find that isolated place in the presence of others (sometimes this is probably pretty dissociative). Then later terrorizing and sexual assault on top of early medical trauma and abuse, the little I remember (and certainly terrible, disorganized attachment). The early developmental trauma probably shaped lots of what I'm still left struggling with at this point. My needs were not okay. Combined medical trauma and shame over having any needs, I felt half dead for a long time and unable to feel okay taking care of myself as an adult. I grew up feeling semi okay and like I might have any sort of "self" only in isolation, with very few needs. That's hard to un-do....trying to feel "solitude" vs sheer abandonment, shame, and isolation as I slowly come out of my shell. My home is very small and quiet most of the time.