Go arounds are the safest action when an aircraft is not maintaining parameters specified by the airline company and or civil aviation regulations.
All landings are manual except during fog when visibility is a factor.(crew/aircraft/airport certified).
Of course himan error rather than weather or aircraft system failure may trigger a go around,in which case a go around is also the safest and soundest action.
Be glad they did so as it could have ended quite bad if they elected to do otherwise.
Personnaly,i happen to be in a go around on a average once a year.
Last time was a sink rate triggered by f/o which caused a go around at 39feet...
