Sweetheart, for the majority of my life I primarily spoke Arabic at home, and it wasn't till I was about 8 that I began to really learn the English language. Prior to that I only spoke dabbles of it. Nowadays I'm one of the top standard english students, and guess what, I'm beating quite a few students who are Australian and speak only English.
Taekwondo is the only form of Karate I now, and so does that make me an expert in it?
Speaking English all your life is not an indicator of how much you know and doesn't make you smarter than anyone else.