The Lack of Insight

This may not be well known, but those with personality disorders typically do not know or feel that they are abnormal or different. Those with SPD are no exception. In general, they do not feel like aliens compared to other humans. Usually, the only reason as to why they know that they are different from others is because people often tell them such. As such, it follows that they don't know how or why they are different, and neither do other people; they just are what they are.

Frankly, this can cause a lot of grief. Not knowing what your problems are leads to not doing anything about them, and one can also get the feeling that they will never have a connection with others in this world. They may always be the outliers of society, never getting to the truth of the matter why no one is like them or even why they have problems to begin with. It can drive someone insane. In fact, it would probably drive anyone insane.

When you have a lack of insight, what do you do? Ask other people. And with those with SPD, other people either are ignorant themselves, or wrong (just because you don't know what you are, doesn't mean that you don't know what you are not). Rarely does anyone else have to deal with so much misunderstanding. So as a result, people with SPD can't do anything. They are looking to open a locked door that has no key, solve an equation that has no answer, and find their kind-people that probably don't exist.

We live alone.