I actually live in a city that usually gets over 50 degrees Celsius for weeks and we pay a LOT on energy just to keep the A/C on. I don't think it is sustainable for the whole world and I'm afraid of what will happen here once we reach higher temps.
The linked picture is just an artist's interpretation, not a photo, and I assume you were mostly joking too. I think we agree that it's not a good idea to hurry in warming the planet.