To become part of the fabric of this society and its melting pot, you have to learn English. It is illogical to refuse adopting the language of the majority – there are too many missed opportunities and self-marginalization in a society where the sky is the limit.
If your goal is to reject 235 years of U.S. history and culture by changing it into your vision of Latin hood, then Spanish-only barrios make sense. There is also the option of going back where you came from if this country’s customs, language, religion, and culture offend you.