Imagine going to mars, but not finding the red, rusty planet that we all know and love, but finding a planet full and thriving with life and water but completely different from our own Earth. Such as different plants, animals, and maybe some extra-terestrial human-like beings. That is what I would make if I could terra-form planets. I would make all planets in the solar system like Earth but different in one way or another. I would love terra-forming planets in my own custom way. That is why I love terra-forming.