I prefer the explanation that Ma Kent made the costume out of Clarks baby blankets...
In that scenario, there's definitely no replacing a damaged or lost outfit.
Well in many versions of the story, Jor-el and Lara actually intend for their son to go to Earth and become an inspiration to the people, and to use his powers for good.
I liked Smallville
's early idea that he was sent to rule or conquer and that it was his upbringing with the Kents that made him a force for good. Too bad they backpedaled on that.