Thanks everyone for the feedback, and my apologies for being so late in replying.
Kal's reasons for not wanting a secret identity are just as people guessed here. I would only add that Kal feels as if he owes something to the people of Earth, and that lying to them is a poor way to repay that debt. We'll see more of that later.
As for Luthor... Well, that's coming later, too.
Thanks once again for the comments. The next chapter is coming up soon.
