Miss some things, but mostly not
My two cents worth on some of these issues. We're in our fourth year full-timing and we love it every bit. We don't miss our dishwasher, we miss our clothes washer a little, I miss books and tools, and space for friends. We don't miss maintenance, insurance, taxes, junk mail, and repairs on the house and cars.
I miss a lot of my books. No, I can't download those I collected in the sixties and seventies. Some few of them maybe are out there but more aren't. They were good friends, especially in winter time sitting by the fire with an oil lamp, turning the pages slowly. I don't get any of the charm reading books on our iPad. Yes, it can comprise hundreds of books. But it is cold and without charm. Give me a real book anytime.
We do really well with our means of privacy. Whenever Debbie wants more space, she sends me outside. Doesn't happen often, in fact hardly ever. But the strategy is available. We're chasing 75 degrees and both love out-of-doors so going outside isn't much of a hardship.
I miss some of my tools sometimes, and suffer occasional seller's remorse. Yet we decided we couldn't keep it all and some of the tools were really bulky.
I don't miss the attics full of junk, (and some really neat stuff, too) one over the house and one over the garage. Both full, and most of it went to charity. Sold a little of it. Saved a little and saved some books and a few items of clothing and put them in a 250 cubic feet storage locker (5' wide X 7' long X 7' high).
Most I miss the space to dance or entertain in our house. Yeah, we can invite six in for drinks, but then they try to sit down and two have to face one way and four face the other way. Just doesn't play well. One percent of the time, we could use a little more space. Maybe not, eh? We'll just play in your house sometime.