"You can just look at photos/videos on the web." That would require someone to take the actual photos or videos.
You don't want to take photos on vacation? Fantastic!
You do want to take photos on vacation? Awesome!
... I don't really care what you do. It's your vacation and you get to live it how you like.
However, it shouldn't interfere with everyone else's experience. That being said, stop worrying about what everyone else is doing, and enjoy yourself at the happiest place on earth.
Personally, I love to take photos at Disney. I like to get different/creative angles of things. For me, it opens my mind to a different side of Disney. It's amazing all the little details they put into things, that most people past by running from ride to ride. Stopping to take a photo, is like stopping to smell the roses, for me. And I completely understand, not everyone is like that.
Here's my photo of people taking pics. I take comfort in knowing that everyone in this photo won't have a decent shot. I took this photo with an ultra wide angle lens at 16mm. Most cellphones are about (equivalent) 30mm.