Other dogs are selfish(?) -not sure if thats the word I'm looking for- could really care less, they live with you and love you, but when it comes to obeying a command there attitude is "what's in it for me?" I've seen this attitude with dogs that have been trained with the 'lure into postition' meathod. If you don't have a treat, they don't do it.
Brattina,
All dogs are concerned with "what's in it for me." Some may be more obvious than others. Some know how to get along in a more indirect way. But they all are manipulative and opportunistic. That is their nature. That is how they became domesticated, basically. All dogs have some degree or another, varying amounts of pack drive, prey drive and fight/flight drive. When dogs have been neglected or abused, pack drive hasn't done them much good, so they may veer off from engaging in much of that. This may be what you're talking about or there are dogs with a lower pack drive than others. I believe (don't quote me) that some hound type dog have more in the way of prey drive and a lower pack drive. My Dobe has a very high pack drive and a fairly high prey drive. There are dogs who have not had their emotional needs met. But there are ways to regain some of that in abused dogs, for instance, by building trust, over time. When pack drive is stronger, then I think a more communicative bond will form between dog and human.
Treating and luring, IMO has nothing to do with disobediance. Training does... and a healthy relationship has to do with a dog's attentiveness to it's owner. I train, using luring for positioning rather than force. I don't any longer, need treats for everything all the time. The dogs you saw who required treats to do anything weren't trained properly. The treats at some point need to be put on a variable reward schedule. There's more to operant/classical conditioning training than simply giving treats for everything. My dog is coming along beautifully with his training.... doing some advanced obedience and agility... and he's very well mannered and the bond we have is phenomenal. If he were a human, he'd be my husband. ROFL.
Like Angelique said, some dogs have some real psychological issues from damaging relationships with people. Those need to be overcome with expert handling. But as far as dogs thinking along the lines of what's in it for me, don't kid yourself into thinking your dog does things ONLY because he loves you. He is hard wired to instinctively get along with you in order to survive with as little difficulty or hardship to himself as possible. There has to be something in it for the dog to have anything to do with us. And visa versa.
Most trainers take advantage of that inherent thing in dogs, that there has to be something in it for them. That's how they're able to be trained.