Not all non-canon shippers, be they slash, het, femslash, or whatever are "teenagers who need to mature so they'll know better", sweetie pumpkin (hey, if you're going to pull out the sugary condescension, I will, too). The fact that you automatically assume that even in a fandom where the majority of members are over eighteen speaks volumes about your own fandom maturity. In fact, I dare you to go into the long-running fandoms and pull that shit. Come on over to a place like scans_daily, or one of the old-school Trek comms and tell everyone who thinks any pairing the author didn't explicitly state is interesting anyway is obviously an immature teenager with no sense of writing or characterization. It'll be fun to watch you get roasted on a spit.