I'm also a die hard Trekkie and almost all other reasonably good sci-fi (of which there is a long list). Still have my signed Marina Sirtis poster. The mistake is needing to compare them and keep everything locked into what already happened.
If you just watch a new series or movie for its own sake, realizing that creators, directors, actors, technology, audiences, etc. ongoingly change, it becomes pointless to expect everything to stay the same, or the way you think it should be.
For example, I could never stand watching DS9 or Enterprise after TOS, TNG, Voyager...and for some reason bought the 1st season of DVD's. I ended up totally loving both series for their own sake. Same with the collection of SG movies.
Same with Stargate. I thought the movie was a masterpiece, and the TV series was a paled comparison until I got hooked. Then I thought it sucked when Dean Anderson left, until I got hooked by new characters. Again when their nemesis changed from the Goa'uld to the Ori. Then I thought it mega sucked when Atlantis came on board until I got hooked on all those as well. Same with SG movies that have come out.