I have little use for TOS outside of a handful of episodes, but I enjoy (most of) the films well enough. With the exception of the first film (which I actually do like), the TOS movies have a very different style and tone to TOS itself, and you don't need to have seen anything from TOS for them to make sense. Wrath is the only one with a plot connection to TOS, and it gives you what little you need to know in the film.The only TOS film i've seen to date is still Wrath of Khan. I grew up with TNG and never really got into TOS - I've tried a few times but, y'know... it's just dated. And i'd rather just watch the 90s shows.
Someday I will sit and watch at least the good ones.