And yet, some of us enjoy 300 pages of introspection... and, you know, we're just writing for fun here. No editors. No rules.
Trying to write for publication is fine (good luck, y'all!). So is *not* trying to write for publication. My favorite author, Lois McMaster Bujold, started out writing Star Trek fanfic, then moved to novels, and has won multiple Hugo Awards. She's said that writing fanfic is not less worthwhile than published fiction, it just has its own, different rewards. <shrug>
Whatever makes you happy
PJ