First off, The Moon...it is mine. Let's get that straight right now.
Secondly, nuke Africa...multiple times. Why? Well, for one it will show I don't give a damn about human life and two...who gives a shit about Africa? Or at least that's what ignorant people on the internet will be saying. I'll be sitting back with popcorn while people argue. I've gotta amuse myself between my evil doings. Not too mention it will leave a good portion of people worrying if they'll get nuke
Thirdly, bumper cars, go carts, and kiddie rides in general...ALL RIGGED TO EXPLODE! I'll only do this to bigger, more significant places like Disney Land, Orlando studios, etc. Hell, maybe I'll do this to zoos as well. At least it would make petting zoo's more interesting. This will scare people away from general fun places, and perhaps save them money...because I'm not THAT evil. *thinks about nuking Australia next*
Fourth, re-enact Hitler's rise to power...except with more explosions. I'll round up a few Jews, dress up my robotic minions as Nazi's, etc. See where we go from there. I'll also get to see how countries respond to such means, with a faceless enemy with unlimited resources.
Fifth, nuke Australia...multiple times. ...I hate kangaroos and since it's white people this time, even more people will worry about getting blown up. Then I'll nuke South America just to worry the America's above it. Mexico will be freaking out, the US will be worried, and Canada will be simply going WTF.
Sixth, I'll set Asia a blaze...I won't just nuke it, I'll really just let it all burn with using giant robotic zeppelins with flamethrowers. Yeah, that could easily backfire but who cares? More damage!
Seventh, get the US to destroy itself. Take over a few companies and politicians, raise gas, taxes, have the country make a treaty with my cause, ban this that, show them the faults of their nation while I destroy it, get people to rebel, fight back, etc etc etc, and if I get bored just start bombing places, Canada and Mexico for lulz.
Eight, turn the Moon into a ship and leave. While everyone's been freaking out I've been collecting parts, building constructing, and will finally head off to the Alpha Centauri system in search of planets I can survive one. Without the Moon the Earth will sorta finish off whose left, but I think I'll nuke the places I've. Or hell I'll just cause ever missile, nuclear or otherwise, to go off at the same time. The EMP left over should fry anything that's left but I'll take care of that too.
Now...what have I accomplished here? Absolutely nothing, I own nothing. I've destroyed the Earth. Why would i do this? Well...