For me, I wouldn't say that I am "ready" to go back home by the end of my trip, but I try to be upbeat about it ("I do have such-and-such going on when I get home, so that will be fun!") and then I usually feel bummed once I'm actually back at home and sitting at work/school again (I feel like, "OK, I did those two things at home I wanted to do, I can go back to WDW now!").
I completely do not visit any of my usual WDW pages after we get back, and I tend to not even come back entirely until I have booked or am about to book my next trip (fortunately that has been very often lately, so my absences haven't been all that long.) Otherwise I just get too distracted and I end up just feeling sad that we can't go back sooner - especially when so many people on this board are in the middle of planning upcoming trips!