Superman in his own private thoughts calls Clark Kent derogatory things, like "pansy Clark."
I've never read that, to my knowledge. Can you tell me which comic this is in, please?
Does Superman resent Clark Kent?
No. I think the asking of this question betrays a lack of understanding of the two identities. Clark is Clark, and Superman is Kal-El's expression of his might, his super-power, his alien heritage, his world-shaking strength. Clark exists for a reason, and it's not as if Clark prevents Superman from being Superman; he doesn't. He's a different beast entirely.
"Every time some big ape puts the moves on Lois I have to pretend to be meek...and I'm tired of it!"
Nope. Doesn't make sense. OK, so let's imagine it was actually Superman standing there with another man coming on to Lois. Would Superman walk over and smack the guy silly? No. He would mind his own business. Superman isn't a bully and he is not full of himself when it comes to women. Superman wouldn't smack down Lothario any more than Clark would.
I tend to go with Telle's opinions on the matter.
.....and I'm also sure that this is one of the things that has contributed to the success of the character for so long.
Definitely.
Having accepted that Clark has to act like this every once in a while, the reader is rewarded for his forbearance when he turns into Superman; that's been there from the very first story.....
True.
The character is VERY intriguing. Clark can't win Lois. But Superman REFUSES to win her. He is happy with soppy worship (check the early stories, and even the later Silver Age ones). WHY?! Such a complex character. If Lois wanted Clark, he would have her. Why is Superman, from the very first comic, treating Lois (the woman he desires) this way?
This man doesn't resent Clark Kent. He IS Clark Kent.
To what extent does he resent his Superman identity?
A great comeback question. I personally feel that if Kal-El were forced to choose between Kent and Superman, he would choose Kent.
Why would Superman resent something that he himself created?
He wants to act that way, he could had made Clark Kent act a little tougher if he really wanted to, but he didn't. So the answer is no, why would he?
May I just add, if you will permit me, that Pa and Ma Kent also created Clark. He is their son. Their son is Clark Kent. Yes, there is an element of invention to Clark, but then, there's an element of invention to all of us in our daily lives and relationships. He's real. He's the son of Pa and Ma.
Seriously, though, in certain incarnations, it may be more regret in establishing himself as being too extreme in his mild-manneredness
I disagree, because the alter ego is Superman; and, for some reason, that's the point some people are missing.