Well that is the thing isn't it.
If you're functional what does it matter?
It's when you're not functional that you should seek help.
If you feel insulted that you may meet the criteria for a mental disorder (when you're functional) you really need to get your priorities straight.
Perturbed and convinced, not insulted. Just like the OP. Functionality is still a blurred line that defines mental health, which in itself a difficult to define. It is useful in that mental health clinicians who want measures that show their interventions are reducing symptoms and aiding daily living skills. However, the issue is murkier. Mental illness and mental health are sometimes not mutually exclusive states, just like physical chronic conditions. For example, I tutored a kid who recently told me he recently was prescribed a relatively fast-acting tricyclic. Sure, the rationale could be to relieve anxiety, but his affect was flat, which was different from a baseline behavior of his normal, which was socially interactive, hygenic, mobile, with a healthy appetite for Chipotle. Even he expressed doubt on why he's on a drug but still was convinced enough to comply.