Help me convince my wife

As the title says, help me! My wife has never watched the movies and I'm a MASSIVE LOTR nerd. Before me she also had never seen Harry Potter and through some savvy arguments I got her to try the movie series. She's now a big fan of the HP series! BUT, my efforts have been met in vain when it comes to LOTR as I think it's a bit more "adult" and "mature" compared to HP as it lacks a bit of that adolescent whismy (or whatever lol).

I would love to share the experience of watching the series with my wife and at least giving it one shot (if she doesn't like it....fine, I'll die knowing I tried). I'll never get back that first time feeling and being able to share that with her and eventually my two daughters someday would be a dream. I'm already incepting it into their little precious minds with my daily gollum impressions at second breakfast 😂

Any hints for successful encouragement?