Conflict in the superhero genre

Why we can't get enough of these guys punching each other.

 "Once upon a time, a super powered alien landed on our planet. The people who found him adopted him and raised him as if he was an ordinary boy. He flew around town every once in a while. The end."

What happened here? Nothing. Every story needs plot progression, or else there's not much to keep you from reading. The best way to spice up a story? Conflict.

That's more like it.

Conflict is the driving force of a narrative. Different sources claim a different amount of conflict tropes. Some say there are 4. Others say there are 8. For the purpose of this post, lets go with 5. I will list them, briefly review them and provide examples.

1) Person vs Person = The most basic type of conflict. When a character's goal is at odds with another character's goal. (Bob needs to defeat Alice to become Class President). [source: tvtropes.org]

2) Person vs Self = The character is at odds with him or herself. He or she may question his or her own abilities; an issue of principle; a tough decision. (Alexa caught her friend Jamie stealing from a classmate. Now Alexa must choose between keeping her friendship with Jamie and doing the right thing). [Source: ereadingworksheets.com]

3) Person vs Nature = The character's struggle is brought upon him or her by the forces of nature.(natural disasters, harsh climates, wild animals, etc.) (Tom must quickly adapt to the limited resources on the deserted island).

4) Person vs Society = When a character challenges the manifestation of a culture, institution, value, etc. (Two men fall in love in a homophobic society).

5) Person vs God/Fate = The character is at odds with what he or she is destined to do. (Michael inherits his father's position in the family business, but he doesn't want anything to do with it.)

Now of course, a conflict might include more than one of these categories at the same time, and a particular conflict may be interpreted in various ways. Would you consider Bruce Banner and the The Hulk to be different entities, and thus classify it as "person vs person"? Or would you say that Bruce and The Hulk are one in the same, and thus it would count as a "person vs self" scenario?

Now that we have covered the basics, I ask you: Which conflicts found in the superhero genre do you find compelling? Does it fall in line with these types, or is it something else? You can cite any sort of media that includes them (comics, movies, tv shows, video games, etc).