Having recently seen the first trilogy among Nolan's works, I wonder what opinions you hold about the movies in general. Seeing that I'm quite late to the party, I expect some strong and mature takes in the comments, but you are still free to voice any opinion you may have.
But I think that also understates how influential they were to superhero popular culture. It bears remembering that prior to the BatTrilogy, for a decade-ish superhero films had been either the squeezed-dry sequels of B-list characters, comedies, aimed largely at kids, and/or barely resembled their source material. While 90s and early 00s Superhero comics were moving through their edgy antihero phases, films struggling to define themselves.
The Nolan Trilogy brought the idea of Batman as a tortured loner, alienated from his family and allies, into the broader popular culture. Batman allows villains to die, spies on innocents, and eschews sidekicks. There is no Justice League. "You either die a hero, or live long enough to become the villain" is not the sentiment that pervaded superhero screen media in the years prior to the Nolan trilogy.
Even if you don't like superhero stuff, they're worth watching just as an artifact of mid-late 00's culture, in my opinion.