Poor LocoDriver,
You have had the piss taken out of you a little. A fair enough question though really.
As previously mentioned a Go-Around is a "normal procedure". It is a non reportable event as well, you do not need to put in "paper work" after a go-around. Obviously in some regards to stop crew from thinking they don't want to get in trouble or create paper work so they will push a bad situation which should be resolved by a go-around.
Also as previously mentioned, external and internal factors: another aircraft or vehicle etc on the runway or unstable (high and or fast etc outside company requirements) approach.