It's interesting how some people get so attached to things and will cart them everywhere and then others will not. Sure, I understand keepsakes, mementos and heirlooms...but a couch? I'm like you, and would leave it behind. Moving is a good opportunity to discard excess things. Guns though, yeah they're something a person gets attached too easily. I've had most of mine for many years and would not want to move then on just because I was relocating.
I hear you on the stay in one place thing for sure. Whilst it's a good opportunity to see a few places and live like a local, having roots in one place but travelling around the world is what I've mostly done. I've lived most of my life in Australia...different States at times.