Often the best moves that comes in chess comes from looking several moves into the future, moves that might look bad right now but are best in the future.
In the 3 v 3 Pawn Endgames we have to pay a lot of attention to this.
Black is attacking White's pawn on g5. What is White's best move?
f6 forces again a passed pawn eventually.
With this move we even the pawns and we already have a passed pawn, we'll have a Queen in no time.