My only beef with it is that I don't find it aesthetically pleasing, much like 18 karat gold. It's always been used as a "bling" material to trick out a car's interior and none of that CF stuff is actually doing anything.
Perhaps it's just that every honda kiddie out there thinks that a non-painted carbon fiber hood is somehow cool. That bugs me.
BUT of course if you like it and have the money to throw at it, to each their own! My friend sells custom carbon fiber interior bits--he has 'em made down in mexico for Dirt Cheap...