Epcot is still worth visiting.. Not for Future World.. But for World Showcase and Illuminations. For shopping and dining. World Showcase is, by all means, the only reason to visit Epcot.. Unless you're a fan of Test Track and Spaceship Earth as well, that is understandable.
Well that is a personal opinion. There is not a thing in FW that I don't enjoy. The Land, The Seas, and Universe of Energy are my favourites.