Personally, I feel that 3D is a gimmick which can detract from good storytelling. Still, I don't mind it on occasion if it's done right.
They thought TV was a gimmick when it came out. Thought people would get tired of staring at those little boxes all day...
“Television won’t last because people will soon get tired of staring at a plywood box every night.”
--Darryl Zanuck, movie producer, 20th Century Fox, 1946