Do you prefer to play as black or as white?

It's to explosive to be the best move for White. Jokes aside, 1.c4 should not be the same as 1.e4 or 1.d4 when you actually protect both squares for the Knights (c3 and f3) while c4 only protects the b1 Knight from pawn pushes.

I prefer black as I know those defenses better. As white I always have to worry about the Sicilian or the KID. Although for 6 years I did fare well with 1. f4.

The bird is the word man!