Gord gives this some thought.
He doesn't want to feel as though he had a predictable path to power. He wants to really have one.
Or does he? It was, in some sense, only a conceit that he could grow in strength as a fighter without limit. He could grow strong enough to one day solve the problems in front of him, because they happened to be human-sized problems, and because he limited himself to some sense of the achievable; he didn't think about tackling bigger problems because he hadn't solved these ones yet.
He could have grown strong enough to threaten whole companies of men, but he couldn't have challenged Khorramzadeh as a fighter. Everyone fought with allies, yes, but the only people alive or recently dead who were actually strong enough to turn the tables against even a demon lord were all mages, or at least paladins. Being a cleric was obviously the thing to bet on, but equally obviously a cleric's power is only borrowed, and that would have been true even if he had really been Gorum's. Neither Norgorber nor Gorum would keep a Neutral Good cleric, and while he had no expectation of being that, he was hardly going to refrain if his path took him there.
Kurgess supposedly became a demigod just by being really, really good at athletics. But there are many conflicting stories, and Gord hadn't been living his life in hope of being the next Kurgess.
He could discover a way to become stronger. But he doesn't wish to find a way that would only work for him and not his allies.
He could - well, it could be true that he'd never need to fight again, and so didn't have to worry about it. He doesn't think the world is like that. It could be, if they never find any other worlds, but he's not going to bet on it.
He could conclude that there is no way he'll ever matter again, thoroughly enough to make him quit searching, and make peace with that. To genuinely believe there's nothing he can do anymore.
When he thinks about that, he feels - screaming horror, at the thought of giving up. A void, at the thought of never being able to make up for everything he regrets having done.
Reality doesn't owe it to him to be comfortable, or comforting. He doesn't want to be deluded about mattering. But - it doesn't feel like a conclusion he can contemplate accepting. Not now, maybe not ever.
What else is there? To keep trying, even though he sees no way for it to work, to never give up the struggle even if everyone leaves him in the dust, even if swords become meaningless and everyone fights with fields and Wishes and things he doesn't even have words for? To keep struggling even without faith?
He thinks he can do it. It's the kind of thing he could contemplate doing, before he met Cherry.
But he wants to do better than that.