See, I think that's Scott's function. He's the repressed and angry teenager of the X-Men. He's you and me when we were the age to tell our parents to fuck themselves, or the like.(actually, the people who can relate to Scott range from smart but angry emo-teens all the way up to school shooters) Warren's rich, Bobby's more or less happy, Hank is fine with how he is and is a genius besides. And Jean is everyone's ideal girlfriend. (she's how you conceive the girlfriend you want before you actually start having experience, and consider how Scott idealized her always and you can see that she reflects an adolescent view of women down to her core in a lot of ways) Only Scott of that group is there for the angry teen to relate to. He's the embodiment of that day you told your Dad or Mom to shut up and they didn't understand.
Only problem with that is that if you let him grow older than, say, 20, but have him still be this mopey, broody and angry, then he comes off as a douchebag who might need meds.