And there was always great stuff to discover out there. It shouldn't have taken Serenity for you to discover that.
Anyway, Alien Resurrection was god-awful, X-Men wasn't really whedon, just a few of his lines, one of which was again, god-awful, and yeah, Firefly was mistreated, but it's got to factor in at some point that people simply don't want to play around in that universe. It got 11 episodes and the ratings kept going down. It got a movie, and nobody came. It's a nice treat for those of us willing to take the plunge, but the bottom line is that people simply don't want to watch the characters in that universe. It's not appealing to the mainstream, for whatever reason. And you know what? Neither does Whedon. He's effectively marginalized himself very well. He's a sci-fi Kevin Smith.
Yes, he's a better writer than Lucas, but so is 80 percent of Hollywood. But snarky dialog doesn't make you the savior of sci-fi
Whedon writes GREAT soap opera, I'll give him that 
That said, if you just wanted to say "I like Joss Whedon a whole bunch" you should have just posted that. Because that really doesn't have anything to do with what you seemed to start this thread saying. Well, that and you couldn't tell when Whedon was goofing.