Whenever landing conditions are not satisfactory, a go-around is warranted. There are many factors that can contribute to unsatisfactory landing conditions. Situations such as air traffic control requirements, unexpected appearance of hazards on the runway, overtaking another airplane, wind shear, wake turbulence, mechanical failure and/or an unstabilized approach are all examples of reasons to discontinue a landing approach and make another approach under more favorable conditions.
AFH Ch-08 (12) Go-Around (Rejected Landing)
Cessna SOPM 2-98 Go Around/Rejected Landing
Private Pilot ACS Page 33 Task N. Go-Around/Rejected Landing