I lived on a farm for a while and our dogs ran around the property all day, just doing what dogs do. They could come in if they wanted to, but mostly they liked to run and play outside. Several of them were pits. At night, they came indoors. It’s ok to let your dogs run around alone if you live in the right area (lots of space, not many people around). In that situation, you don’t have to watch your dogs like children, but if you want them to be more attached to you, do some activities with them, like go for walks together, or play fetch, or keep them indoors longer. Our farm dogs were friendly, healthy, strong, affectionate, and loving. They ate well and played all day, just like dogs should. Good luck!