1. The buildings are normal and bigger
2. Only inner planet with a round moon
3. The continents are beautifully shaped😐(literally, no other planet nor moon have beautiful continents)
4. There's grass, trees, oceans, cities, and a beautiful sky (Well, duh)
5. The best ROBLOX places take place on that planet
6. Because:
The Sun is hot
The air meter sucks
Mercury has one of those
Venus has acid oceans
The moon is dark
Mars has terrifying sand leeches
We go to Jupiter to get more stupider
Europa is very noisy (and some of the domes still give you the air meter)
I don't know about the other Jupiter moons (I still like Callisto)
People get sent to Saturn when jumping on some of it's moons
Titan gets destroyed (and has methane lakes)
The same thing as Saturn with Uranus, but at least there's shockstones on it's moons
Neptune is a gas planet
Triton has that pesky air meter as well
AND PLUTO AND IT'S MOONS ARE TOO FAR!
I think that's it, got anymore reason? Tell me in the comments