I can tell you that a go-around in a classic 747 is anything but a non-event - especially for the non-flying pilot! No TOGA switch (at least, not used), hands all over the flight deck with flight directors, flaps, spoilers and gear, while trying to hold the plate under a light, read, understand and relay the info to the flying pilot in time to avoid the subsequent level bust (you're now going up at a distinctly sprightly rate of climb!), not to mention the fairly firm treatment the aircraft needs to make 260-odd tonnes change direction from down to up in the first place! Downwind for the next approach needs to be long enough for the heart rate to come down to the point where you can contemplate the next approach. Of course, Sod's Law says that it's dark, there's a turbulent 35kt crosswind, the cloudbase or visibility is CAT11, it's raining and the wipers are bloody noisy!
For a modern-generation Boeing or Airbus it may be a non-event; spare a thought for those of us still flying steam-driven technology!