We had hoppers when we went three years ago and used them several times, so I bought them again this trip. We ended up not using them at all, it just wouldn't have worked the way our plans came together. I think part of the difference was location (last time we stayed at the Poly, so it was super easy to hop on the monorail and do an evening at MK or Epcot after a morning elsewhere). Also we didn't have to deal with the security line ups three years ago, so that made going back into the parks faster than it is now.
Party size might also make a difference--its way easier to move nimbly with a small group, IME. Just going from 3 people to six made it a lot harder to move between any two places, so park hopping felt like a bigger burden. I had planned to do a half day at HS because we only had a few attractions we wanted to experience there, but in the end we ran out of time and skipped it altogether. I thinker higher than expected overall crowd levels contributed to that--we just couldn't get as much done, so there wasn't time to hop and do more. If the crowds had been noticeably lower at one park hopping would have made sense, but I never noticed one with dramatically lower crowd levels.
If we stayed at an Epcot or monorail resort next time I would probably get hoppers again, because it is nice to be able to pop over for dinner or a show, etc. If we're either driving or busing everywhere I would be less inclined, I think. The exception would be if a I got a hard to book adr that ended up not matching out touring plan or something, although even then I've had pretty good luck snagging coveted ADRs late in the game.