Why do white people prefer white shelled eggs over brown shelled eggs?

I've never seen white shelled eggs in my supermarket so my eggs are always brown! I much prefer the dark meat in chicken because it has more flavour and is usually less dry and we eat brown bread/pasta/rice etc because its better for us! I prefer brown chocolate over white too and my best friend and my brother in law are brown! Although my children are white and they are the best children in the world so maybe I do think white is better!! lol