I see Firefly as a bunch of cheap magic tricks, low skilled stuff put together for the right audience at the right time.
It strikes me as lazy and opportunistic. Clever quips, some fantastic tits, and self aware commentary on a genre that had grown complacent, ultimately hiding a lack of story and character development.
The worldbuilding was pure copy/paste, with little thought about how it fits together. The story was a collection of tropes. The characters were shallow and dull, but said enough clever and funny things that people didn't notice.
At the time it looked great. Attractive smart people kicking ass and delivering lines. But in hindsight it's like watching a street magician when you know all the tricks. You realize how little skill and effort actually went into it, how some dumb fuck just spent a lot of time in his bedroom smoking weed and learning easy tricks on youtube to sucker in a gullible audience.
Ehh.. I don't necessarily agree with all, or even most of that... but like I said, I can understand why people wouldn't like Firefly, especially after nearly 2 decades of hindsight, and seeing how formulaic and cuckish Whedon has become over those years. Point is, I don't think less of you for not liking Firefly, and I hope you don't think less of me because I still do.
I will agree that the some of the characters came off as a little bit shallow... but I mean, come on... Firefly only even got 11 of the finished 15 episodes televised in the first place, and they were aired wildly out of order, much to the detriment of the show.
Imagine if TNG had been canceled after only the first 15 episodes of Season 1 had even been filmed, let alone aired... Now also imagine that the network executives decided to air "The Naked Now" as the first episode of the series (because it was 'more exciting' than "Encounter at Farpoint".) but they also still decided to air "Encounter at Far Point" after that, even though that makes no sense...
And finally, imagine that the rest of the (already below average) first dozen-ish episodes of TNG that we got to see after that, were aired in an order that made the continuity of the show even more difficult to follow, and we didn't even get to see all of the episodes unless we purchased the dvd box set years later...
I do still wholly believe that the first "season" of Firefly, or at least what we got of it (provided you watch the episodes in the correct order) is MUCH better than the entire first season of TNG was. (And I do also believe that "Serenity" was a much better movie than any of the *TNG* Trek movies we got were, even the relatively good one.) Would Firefly have gotten better like TNG eventually did? I guess we'll never know... But hell, I still liked it.