So..?
I guess I should have made it clear that "you" was meant in the plural sense, meaning all the people in Barcelona as well as you personally, as in everyone in Barcelona speaks Catalan, at least as their first language. Or perhaps I should have used the Southern U.S. dialect "y'all," which would be clear enough.
So.. My thinking was that if indeed Catalan is your native tongue, then you come to your opinion of (Castilian) Spanish as somewhat of an outsider, which can still be interesting. You could also give your observations and opinions on Catalan, as well.
Or perhaps my mistake is in assuming that since you live in Barcelona, that you must be a native of the city. Maybe you hail originally from a region of Spain which speaks Castilian. But then again, I've noticed that most JUB members living in Spain are American or British ex-patriots, meaning that their native language is English. I did not think you were among them. My point is that I was looking for some background on your perspective.