Why shall i need an app while its given a system feature? BTW who knows what new OSX features will bring, new file system for better sync for air, a new pure f

Why shall i need an app while its given a system feature? BTW who knows what new OSX features will bring, new file system for better sync for air, a new pure friendly UI? Who knows... And i don't like apps that depended some other major competitors than my environment.