What for? There is not much help anyway and I can manage my life quite well without any "social worker" or whatever telling me to get out and make friends.
Most likely the effort to get diagnosed would waste more time than the result is worth. I don't need help, since there is not much I would like to change. And I know myself, what I would have to do if I wanted to.
This may depend on the place where you live and your personal situation (high functioning, depressive, suicidal...). For me it works at it is.
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Deep into that darkness peering, long I stood there wondering, fearing,
Doubting, dreaming dreams no mortal ever dared to dream before (E.A.Poe)