This may just be a difference in attitude. For myself, I would count having multiple iPhones and MacBook Pros replaced or repaired as a terrible experience. Good service is better than bad service, and occasional defects are unavoidable, but the iPhone is only 5 years old; multiple replacements within that span would give me doubts about a company (unless you're buying lots of them, e.g. if your at a company that supplies employees with phones).