Your ferrets all look very healthy and well cared for. A good friend of mine has 3 of them, so I have seen the "addiciton" you describe first-hand. In the right hands, they can be wonderful, social, intelligent (and entertaining!) companions. But they are not for everyone . . . much like our beloved corgis! You have given your ferrets a wonderful, loving home, and they are lucky to have been adopted by you!