Mental landscaping

The frailty of the human mind is a quantifiable variable. However, this is all dependent upon perspective is it not?

Can the insane accurately judge their own, or indeed other peoples sanity?

If we're all different, who's to say that the tests are fair? If everyone was completely sane, then life would just be boring.

I've been told I should go to a shrink before, but can these non-professional people accurately diagnose that need? To be honest, I'm happy with my mental playground. It is what defines us all and to change that would be like admitting that you are less than you should be.