With great power comes great responsibility, then how come he still uses his great power at looking at the short term instead of the larger picture in acting how to do his responsibilities? I think this is why Peter doesnt advance in all his runs in the comic because writers dont want him to change into a emotionally and wisely self made adult that has settled into his position as the person he grows into while the superhero side is a symbol of that. Even when he was married or a teacher, he never really had things under control and acted like a paranoid teen looking over his shoulder for misfortune, instead of being confident and being ready for anything like a grown man.
Peter should be Batman or Ironman level of life seasoned and Cap/Supes level of resolved already. He still hasnt changed from a basic teenage angst mindset.