I believe there are cases for being an outsider on purpose. For example, you may want to sacrifice being a part of particular social group (which you may happen to be born into) in order to increase your social mobility and gain future advantage. This may not be a conscious decision and does not exclude a possibility of fitting into another, desired social group later.
(Anecdotally, sometimes I have a feeling that lack of social interaction is an easy way to being if not a bit smarter, then at least more focused. However, some social interaction is still important, since 1) the lack of it isn't healthy, and 2) most of us in the end are working for the public anyway (sometimes without realizing it), so it's important to keep track that you work on the right things.)
(Anecdotally, sometimes I have a feeling that lack of social interaction is an easy way to being if not a bit smarter, then at least more focused. However, some social interaction is still important, since 1) the lack of it isn't healthy, and 2) most of us in the end are working for the public anyway (sometimes without realizing it), so it's important to keep track that you work on the right things.)