I'd probably lose whatever geek credentials I have left for admitting this, but I love the new Enterprise series. =) Yes the ending of the finale of season 3 is hilarious and you should really turn it off once you get to the end where they're hailing StarFleet, up to that point it's one of the best damn sci-fi episodes of any series, ever. But if you want to continue on, you get to see, OMG EVIL ALIEN NAZIS!!! *giggle* =)
But what's not to like about the series? Freaky time travel headaches, at least 2 species they don't learn the names of (Borg and Ferrengi) and even an mpreg episode! (In season 1 no less!
=)
Seriously, I do love it. =) Just remember it's as much fiction as science, and like all other Star Trek series, takes place in a universe with slightly different physical laws and rules (caused by subspace) Enjoy it for the story it tells.