So why do people complain about The Final Frontier, which in many ways was closer to the spirit of TOS, than any other movie, and The Motion Picture.
People nowadays expect a stong element of action and space battles in their Sci-Fi. Probably due to the success of Star Wars. Whether or not this is a good or bad thing, depends on how it is done. Roddenbery had a lot of action in TOS by the way, battles with Klingons Romulans, fist fights, Redshirts buying it every other episode, quite violent really.
You may find that having is not so pleasing a thing as wanting. This is not logical, but it is often true." Spock (Amok Time)