Originally Posted by
Sutekh
Doom has an ironclad sense of what sort of man he is. Whether or not his actions have ever belied this, he is utterly convinced to his core that he is noble, and that his cause is just, and that if he can only complete this latest goal, it will have all been worth it and he'll show them all how wrong they were! Any action he takes that threatens that self-identity, he has to rationalize away, or blame on other people interfering, or foist off on a Doombot acting up. He's convinced himself that he's the misunderstood and persecuted good guy of his own story, and so will act with what he perceives as 'honor' up until the moment he doesn't, and, after that, he'll have a very good excuse for why that 'didn't count.'
(Such as that he has no equals, no peers, and so it doesn't really count as 'betrayal' when he doesn't always follow the terms of an agreement with a lesser person, or an enemy like Richards. It becomes a sign of his superiority that he 'tricked' them or moved them around like pawns. You can't 'betray' an enemy, after all. It's kind of your job to screw them over! You can only ever betray a *friend,* and Doom is above such petty fleeting human connections.)
I think he'll behave like a gentleman to Valeria until the split second he sees an opportunity that is, in his mind, 'more important.' He's got the notion that once he attains whatever power or goal he's seeking, that it will trump any sacrifices he had to make to get there, because he will have the power to make it all right again.
And yet, time and again, such as when he stole the Silver Surfers power cosmic, including abilities like transmutation and healing, which he said he could use to better the world and would use in ways that the Silver Surfer had never imagined, the very first thing he does isn't healing Latverians or turning his country into a paradise or quantum-leaping human evolution, no, he goes on a mad spree of blowing stuff up, ranting like a lunatic, because, whatever else he is, he is Doom, and there's nobody more fundamentally wrong about who they are than he.
He'll never get the tragedy or comedy of his existence.
In recent years, DC has tried to position Lex Luthor in this same vein, constantly talking up how much good he'd do for the world if only Superman wasn't around oppressing him and stuff, and yet, when Superman is gone for a year, Lex just makes everything worse (barring AUs where Doom or Luthor end up in charge and make the world into a shiny utopia...).
Doom did the whole 'hero of my own story' thing first, and better, IMO.