Dogs bark! Its part of being a dog, and as long as its not excessive, (definition of which is somewhat subjective) I don't see it as a problem. Having a dog as part or your life, has many many positive aspects, and some negative, such as, having clean up after them, tolerating some barking, dealing with them and your Vet when they are sick, non of which negate what a dog can and will contribute to your life.