It's pretty close-minded not to be interested in animated movies, you're doing yourself a huge disservice.
What is the appeal?
You are in your 20's, I believe, what appeals to you when one is in the pipeline, you read about it, etc, what grabs you? Visuals, story, voices, what is the hook?
The exact same things that appeal to me for non-animated movies.. other than casting announcements. I don't particularly care what actor voices the characters, so that's unimportant. But it's mostly story.. the same way you hear a log-line and think "I GOTTA see that one" or "Hmm, that could be interesting". Animated movies have an added benefit of doing whatever the hell they want. Right now they can make a movie about a robot in space, about a fish, about toys coming to life, and they can do it well.
After his son his kidnapped, a father embarks on a cross country journey to find his son before he's sold and given to a new family. That's the basic plot of Finding Nemo just reworded
Following the tragic death of his wife, an elderly man decides to take their dream vacation and he unknowingly gets a young companion who joins. That's Up.
Unable to be a chef due to his physical limitations, a young man partners with a bumbling chef and becomes a success, but how long will it last? Ratatouille.
Superheroes are outlawed and can't use their powers, but a family of superheroes must fight back and embrace their gifts when a powerful enemy arises. The Incredibles.
I'm sure people can rephrase the loglines for plenty of Pixar movies and the basic story is something universally appealing or interesting. No, they're never going to give you "The Departed but with kangaroos" or anything like that, but much of the story is universal. Father finding his kidnapped son, dealing with grief and death, growing up and moving on, do the ends justify the means, etc.
And that's just based on story. Then you can get into the comedy, because most Pixar movies are also hilarious. While I don't care who gets cast as what voice.. the voice acting is still really great. Ellen Degeneres in Finding Nemo, John Goodman and Billy Crystal in Monsters, Hanks and Allen in Toy Story, John Ratzenberger in everything he does
, all an important part of the movies. Then the actual animation is awesome. Just because it's animated doesn't mean they don't care about cinematography or design or colors or any of the technical and visual elements that make us love movies. And Pixar movies in particular have incredible visual effects.
I've been able to rewatch all these movies and have them still be high-quality and I didn't have to be a kid to appreciate them. The only exception was the Toy Story trilogy, which was particularly meaningful because I, along with many people, literally grew up with those movies. I was a kid when Toy Story came out, and I was an adult when Toy Story 3 came out.. and Toy Story 3 hit me
hard.
I don't necessarily go into a new Pixar or animated movie looking for the deeper meanings, but you can't help but notice it. Hell, I almost wrote a upper-level college English paper on Monsters, Inc. (but chose The Sandlot instead). You can sit down and just enjoy the animation, the humor, and if you get a little something more out of it.. then that's just a bonus. Or you can see past the "children's appeal" and appreciate what the bigger ideas they're trying to accomplish.