>>94281622Different ideologies
Smallville Pa Kent was in a much more trusting era. Less people had the internet, so less people looked up shit that the CIA and FBI liked to do to average US citizen for fun. He fully believes in the possibility of a messianic hero, and is trying to guide Clark towards that path.
MoS Pa Kent? He's evidently extremely afraid of the government, that they're going to take away his kid, that they're going to hurt him, ruin his life. A spaceship crashes in his field and he immediately hides it. They raise the kid as their own until they feel he's old enough to understand, and that one day he should return to where he came from. He took the key to his pod, got it analysed and then somehow persuaded the scientist to keep quiet about it. His son gets bullied, and he urges his son to just keep his head down, and not cause a scene.
He believes his son can be amazing, that he CAN help people, and he knows he'd be great at it. But he doesn't want that for him, because he feels it's more important that he's able to live a normal life unburdened by that, that he continues life on the quiet farm out of sight but safe.
That's why he chooses to die, because HE fucked up, not his son. He doesn't want to be the reason that his son is forced to never live a normal life, where some group of bible beating nutters praise him as the second coming. He can't tell his son to let people die for their mistakes, but he can't let him fix everyone's injustices in the open.He wants his son to live, not to serve as some chained god. He can't tell his son to let people die for their mistakes, but he can't let him fix everyone's injustices in the open.
Of course, this could have all been explained better by a more eloquent film writer, who knows that an underpass is fucking dangerous in a tornado 
