i feel like if it was between disney v universal i'd just choose universal, that is if we're comparing just magic kingdom to universal and islands of adventure. plus i mean... i can't argue with butterbeer.
there seems like a lot more to do at universal compared to disney which is kind of an interesting take but i gotta be honest the only rides that interested me personally was space mountain and i think riding go karts the last time i went to disney. i also went on it's a small world but that's because the last time i've been on it, i was three years old so going on it 20 years later was just mindblowing.
most other things are geared towards kids yes and i think where disney shines for the most part is the parades which are really enjoyable to see but it can be tough to get a good view. restaurants are also pretty decent but they are absurdly overpriced. assuming your wallet can handle the pain, the experience actually isn't bad. but personally i feel like you get more bang from your buck at universal, but maybe that's just me.
actually one of my goals is either to visit blizzard beach or typhoon lagoon which are both disney water parks! i've always felt like i wouldn't be a huge fan of water parks but at the same time i feel like i haven't given them a proper chance so i really want to this time around.