Why I'm learning Spanish

I was born in a Hispanic family, but raised as una gringa. My first word was in Spanish, but English is my main language. I feel like an idiot when I'm in the house, and my parents speak Spanish to each other. English is the language in our household but Spanglish is spoken. My mother speaks Spanglish to me, and with her friends. I also have Hispanic friends, and their accent is very strong, and they end up speaking Spanish to me. I have to say, "Umm, I don't speak Spanish~!" They always ask me why I am in ESL. I don't know why, but it all started when I started school in kindergarten. My brother doesn't speak Spanish either, and he was born in America, so he doesn't take ESL, but he does have to have a chaperone because of his autism. He doesn't take classes with the other special ED. He tries speaking Spanish, but it ends up turning into Gibberish. It's funny. I'm taking Spanish in my high school, and I've learned so much! I felt guilty for not speaking Spanish, because everyone tells me to learn Spanish so I could be bilingual and be able to communicate with people that don't speak English, and only Spanish. And most of friends can speak other languages, and it just makes me feel guilty and I didn't want to have bad, broken Spanish. So, I'm taking a class and learning from my parents. I'm doing really good so far, hope I can speak Spanish once I get out of high school.