Hi,
"Didn't seem too busy on the approcah at the time"
Sometimes the approach wind is favourable for the landing Rwy but the 1000 and 2000ft winds give tailwind components. Or perhaps you are asked by ATC to keep your speed up due to other traffic approaching from another direction. With Emirates if not "in the ball park", fully configured and stable on speed and powered up by 1000ft then GO (saves an Air Safety Report and tea and stickeys). If visual with the runway you can come down to 500ft, but if you just know you aren't going to be stable (for may reasons out of your control) then play safe and G/A
Currently on Emirates 332 ( last G/A FFT last week due 744 not getting airborne quickly enough, there you go not our fault).
Ciao.