are there good stories to tell about Spider-Man at lets say...30ish???
I thought that was his current age in the mainstream Marvel comics (or 616 reality
as its known by). The marriage years definitely felt like late 20's / early 30's to me (especially the Stracynski run).
Of course, then you have stuff like Spider-man: Reign
which features Pete in his 50's; it's essentially The Dark Knight Returns for Spider-man.
I didn't even know such a thing existed, although I guess I shouldn't be surprised.