I'm very much a 'love me, love my dogs' person, but I think well behaved dogs is just common courtesy, and teaching dogs self control can only benefit the dog. I don't want my dogs jumping or slobbering on ME when I walk in the door...I can't imagine guests would appreciate it either. My dogs can jump on me when asked, but not uninvited. I do understand that puppies don't quite have that level of self control yet...that's when management is needed (leash, crate, etc) until the training is there. Even with relatives, my dogs are expected to behave politely.