I haven't been to WDW, but plan to when my kids are much older. At this point, I think everything being so spread out and with so much more do to, would stress me out.
As it is, we spend five days in the parks at DLR, four of which are usually just DL. If I were at WDW, I'd need at least two weeks to do most of it (not even all!) at the pace that we like to do things (walk back to the hotel for a swim, nap, etc.). And if we're leaving the kids with my mom at the hotel to go to dinner, I like to know that I can get back there within 15 min. if my baby (well, the baby is two as of this week so not such a baby anymore) needs me ASAP (like she won't stop crying and is driving grandma bonkers).
I feel like I might have to plan a lot better if I went to WDW. I couldn't just hop back and forth between the parks and DTD and our hotel room and be at any of them within minutes.
My dh has been to WDW (about 12 years ago was the last time) and that trip was the reason he did not want to go to our first trip to DLR. He was pleasantly surprised when did go.
Not knocking WDW, because as I said, I am looking forward to when my kids are older and we can go.
Though dh thinks we should skip Epcot alltogether, LOL.