Personally, I feel naked without a seatbelt. We have belts only for the pilot and co pilot seats. We have extensively remodeled the inside of our coach and don't have a sofa any longer (which had belts). We virtually never travel with anyone outside ourselves in the coach. When my wife rides in the copilot's seat, she buckles up, however she often will lie in bed in the back when we're traveling due to health. When the children lived at home, we required them to use belts all the time. I haven't been successful in getting our cat to buckle up, tho.
Steve & Carolyn