In that case u have a open rook and u are blocking dark squares so its fine
Is it smart to castle when the f pawn is gone?
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Yes of course you castle O-O so as to use the f-file. Of course you do not catsle O-O-O because then your Kc1 is on the open c-file. The whole idea of for example the King's Gambit 1 e4 e5 2 f4 exf4 is to castle O-O so as to use the active rook Rf1 on the open f-file.
thanks guys!
May 22, 2021
0
#5
A missing f-pawn can sometimes be dangerous, but not here. How are black's pieces even supposed to get to the kingside to participate in an attack?
The pawns are pointing towards white attacking on the kingside, while black should trade pieces on c3 and then try targeting white's pawn weaknesses on the queenside. So yes, castling short is absolutely the right choice for white. 
Castling to either side needs an extra King move for safety Kb1 or Kg1 so either is good as long as you are castled. Better to prevent any possible future checks so as to have no worries when you attack.
May 22, 2021
0
#8
Bramblyspam wrote:
A missing f-pawn can sometimes be dangerous, but not here. How are black's pieces even supposed to get to the kingside to participate in an attack?
The pawns are pointing towards white attacking on the kingside, while black should trade pieces on c3 and then try targeting white's pawn weaknesses on the queenside. So yes, castling short is absolutely the right choice for white.
+1
A few things I'll like to contribute to the original post though:
Having no f-pawn does indeed weaken the King, but this is less of an issue here since the "exposing" diagonal g1-a7 is blocked by the d4 pawn. If White's pawn wasn't blocked in place here (by the d4-d5 pawn ram), then perhaps the White King would be in greater danger.
Another consideration is where the King should go if it doesn't castle Kingside...nowhere good really! Here O-O makes the most sense. Leaving the King in the center here might be the worst option, but castling the other way with O-O-O (even if the Queen wasn't on the backrank still), looks a bit scary due to the c-file and the fact that ...Bxc3 bxc3 would open the b-file from the King shelter.
The Rook on the f-file after castling is a little bonus, but O-O is surely the best option simply because there are not better alternatives for the King to flee towards. As NM @Bramblyspam also noted, Black's pieces are by no means ideally placed for a hypothetical attack that likely will not ever manifest (or take so long to prepare that you'll have defense or counter threats by then).
Should I have gone for queenside? Is it a no go to castle when a pawn is missing?