I find that castling queenside is generally more aggressive than castling kingside. Queenside castling activates your rook on the d file immediately, whereas kingside castling usually puts your rook right behind your pawn on f2 and requires a tempo to move the rook to a more active square.
yes, it's true, but everyone castle king side because it faster than queen side
I'm writting a blog about this and I need your help. Thanks.