I don't think you have to "grow up", just not obsess over every aspect of Star Wars that you don't like. Trust me, that will drive you to do loopy things, like burning a perfectly good blu ray set that you got for free and could have sold second-hand for a tidy sum.
Seriously, though, when a franchise has grown to the size of Star Wars (and it's pretty damned rare for something to get
that big), there is going to be a considerable amount of stuff that is not to your taste. Yeah, it's got the "Star Wars" brand on it, but there have been so many people contributing over decades, each with their own take on things, and it's been marketed to so many different target audiences that a lot of what's out there simply won't appeal to any one person. I not only love Star Wars, I love Star Trek as well, and let me tell you, that has been a hard journey. I suffered through as much "Voyager" as I could stand, and gave "Enterprise" a try (just my luck, when the show finally started to appeal to me, it was cancelled). I read my fair share of crappy books, played more than a few truly terrible games, collected some mediocre comics. Mixed in amongst all that was some gold - but you had to dig through a ton of crap to get to it. I have embraced the new reboot and so far I am enjoying the ride. The point is, I don't think I "grew up", I just
loosened up and learned to pick and choose the stuff I like and ignore the rest. And there isn't a damned thing wrong with that; nothing to get angry or rebellious over (pardon the expression), just recognize that this is for entertainment purposes. You get to an almost zen-like state about it...or maybe I'm just getting old.