Castling manually is good exercise and creates a strong defensive position for your King early on in the game.
Doing in 3 moves what you can do in 1 wastes 2 moves. It gives away your opening advantage as white.
However, I have no doubt that you probably beat some poor sap with it. Why not post a game where you actually won using that kind of opening?
Castling manually is good exercise and creates a strong defensive position for your King early on in the game.