I've always liked and enjoyed this film.
Yes, I have. I saw it several times in the theatres back in 1979, I liked it the first time I saw it, even in its "unfinished" form as it was at that time (though I did not learn about all that stuff until years after). It never seemed unfinished to me when I viewed it in the cinema on the huge screens.
The look and atmosphere and realism were, I would say, more powerful than the story, but the overall experience was sufficiently distracting to me. What a gorgeous-looking Star Trek film this is!
When the film was "fixed" and remastered by Robert Wise and his people later, for DVD, I saw that and I was much impressed by what they did to tighten and clarify and polish the film. So that version I am very happy with too.