Blargh, Falcon in my opinion is the hardest character to play effectively in the game; he requires an ungodly amount of forethought and an intimate knowledge of every single nuance to overcome his balls approach and mad situational kill moves (Bair, Uair, Dair, Fair, Fsmash, sometimes Usmash).
He isn't good by any stretch of the imagination, but he can be used quite effectively. Kirby, Meta, G&W, and sometimes Pika can **** him for free though, and everybody else is an uphill battle. He's still manly as f*ck though, the badness just grows hair on your chest.