For me? Absolutely!!!
Read3D (as opposed to imax 3d on a flatscreen) is mindbendingly amazing. Like being able to see 'forever'. Unlike the old Captain Eo at Disneyland where things actually DO come out of the screen at you (lazers in mist), or red/blue glasses (which just put a blurry line around things)... the new 3D (when done well) adds incredible depth and richness. As if you're looking at an open window into a whole other world, instead of it being on a screen. Like the difference of looking at a fishtank and looking at a screen with a fishtank. A real fishtank the perspective changes between yourself and the tank and within it. A screen with a fish tank you only get the change in perspective of the fish, because the camera is a constant placement.
You can tell how "well" the 3D is done by taking off your glasses. If the screen is a blurry mess of color and you can't see anything (worse than looking at something underwater with your eyes open) there is a LOT of 3D, and it's really well done. If you can take your glasses off and still see everything, they've just added touches to it. AVATAR, for example, was just a mess of colors all swirling around... and to date is the best 3d I've seen. (I'd still go pay to see it in the theatre, if it were still out). A lot of Disney and "teen" movies, it's almost identical to non3d, because they just use it to add shading and an occasional "splash" of 3D. Disney "cheats" very well. They get a lot of 3d effect without a lot of effort, but it's not STUNNING effect (like AVATAR). In really well done 3D you can look and look and look, and the details just *keep coming*. You can look past the central action and count leaves on trees, and see birds behind those trees, and see veins on leaves behind the birds, and the mountains behind the birds, and then the streams and clouds... it. just. keeps. going. Like actually being there, with better eyesight than any human has. "Cheat" 3D is like the difference between computer animation and shaded cartoons. There's a difference, but it's not a huge one.
NOTE: IMAX 3D is designed for ROUND screens. Golfball shaped screens. IMAX3D on a round screen is amazing, but IMAX on a flat screen gives many/most people headaches. Some people get headaches as well from Real3D (they're 2 different types of 3d)