It might be interesting to discuss this same scenario but for other power sets or powered individuals. We all kind of agree Clark has a lot of power and a lot of responsibility, and can’t realistically be stopped by any other force on Earth, at least initially. How about some others?
What if you woke up tomorrow with the powers of:
Batman: Bruce has no powers but is the peak of human everything and is one of the richest people in the world. I immediately work out how to give away as much money as possible, Mackenzie Scott style. I probably won’t engage in any super spy shenanigans because that could go south very, very, quickly. Just enjoy my health and my ability to solve Wordle in one try.
Captain America (MCU): Slightly superhumanly strong, fast, healthy, and clever. I don’t see how that makes me responsible for anything. I’m too old to start a professional sport career but sure, that’s an option. Just enjoy it.
Spider-Man: Despite this being the trope namer, I don’t see how being able to lift a car and stick to walls gives me any significant responsibilities. Sure, I would be a more effective fireman, but I’m not going to change careers. I’m not really any better at dealing with natural disasters or saving lives, mostly. Try not to use my powers, ever.
Cyclops: Do ruby quartz exist and do I know about them? If not, I’m effectively just blind. If so, well, I’m not planning to use my powers ever, but at least I can see now.
Charles Xavier: Oh God. Power corrupts and this definitely will, but it will probably also cut me off from humanity even more than becoming Superman would. I would try to use my powers responsibly and carefully, uncovering and revealing important secrets, trying not to actively control anyone, and so on, but I would cross the line at some point, it’s a question of when. Work out if there’s any way of removing my powers.
Erik Lensherr: Are you kidding me? This is even worse than Superman.