Hmm. Well, thanks everyone for your responses.
CK, I agree with a lot of what you said. My personal take on it is somewhat complicated, but I think Superman is a complicated character, so I suppose that fits. The thing is, he has so many different sides to him and so many different fronts he has to put up. It must be a very stressful and lonely life.
This is going to sound corny but, to me, he is like water, in a way. H2O can be experienced in different forms, solid, liquid and vapor, but when you get right down to it, it's all the same molecule. That's almost how I would describe Clark/Kal-El/Superman. Each part of his personality is distinct and unique, but when you get right down to it, they are all the same person. It's just that person is struggling to juggle all these different public personas and still be true to himself and ultimately, to his destiny.
I don't want to believe that Clark is merely a facade. To me, he was Clark before he was Superman. He was even Clark before he was Kal - EL, in a way, because he was living as Clark Kent before all of that was revealed to him. And the person he was and is as Clark was heavily influenced by his middle American upbringing, thanks to the Kents. (and that's not to say that Jor - EL and Lara wouldn't have been good role models, but they were scientists and their frame of reference would have been different than the Kent's.) Anyway, he wouldn't have been Superman on Krypton so it's kind of a moot point. But because of the Kent's training, and perhaps even his own innate moral compass, here he is able to make the necessary judgments that allow him to do his work as Superman.
Now as for Superman, we all know he is only Superman because of the earth's special circumstances. He would have been just another average guy on Krypton, but here he can really shine and put his learned sense of right and wrong to good use. So here he is, thrust in to a role he never would have lived, otherwise. Maybe on Krypton he would have been a scientist, like his father, an astronaut like his mother or simply a Kryptonian plumber.
t: We'll never know. But here,
here, he gets to be a Super man with incredible powers. He gets to be everybody's favorite hero and literally carry out justice, rescue people and beat up the bad guys. Yet, sadly, even though he is adored by millions, he is still a tragically lonely figure who is the last son of his planet, unable to be with a Kryptonian woman, unable to have Kryptonian children, unable to even fully experience his own Kryptoninan - ness, while at the same time living with, interacting with, and even falling in love with a species he can't fully comprehend, and all while he is unable to reveal the other sides of his personality.
That really breaks my heart for him.
Regardless of which way you see it, whether Clark is the "real" person and Superman is just his job/duty/disguise, or whether Kal-El/Superman is the real person and Clark Kent is the disguise, either way, he's living a lie for a good part of his life. As Clark Kent, he lives in constant fear of being discovered as Superman. As Superman, he lives in fear of being discovered as Clark Kent.
What a life.