Advantages of non-standard dialects

While having knowledge of the standard dialect is best for socioeconomic opportunities, the value of non-standard dialects might be underrated. The fact is, many minority populations show solidarity through their common use of a dialect. They grow up speaking it with their parents and friends. If they fully switch to the standard dialect, they may not be able to share the same relationships they would have had if they had maintained their "lower" dialect.

That's not to say that learning the standard dialect is bad. It is absolutely necessary to advance in the economic ladder. Knowledge of the standard for is essential to getting professional level jobs that require communication skills beyond particular regions. Ideally, people should be able to code-switch between their standard and non-standard dialect to match the situation. Depending on whether the situation is formal or with friends and family, they should be able to optimize each encounter by having access to two forms of speech. On the surface, there are disadvantages to only being able to use one or the other, but none of both can be used.