Not so much that its Disney, but that we have had excellent and fun vacations while we were there.
One trip stands out, though. Our first trip as a family was in late Feb 2016. My wife and I had each been to WDW in the past before we were married, and I had been to DL many times when I was younger. This was our first trip that we were taking as a family. But even more so, we were celebrating. For several years before that trip, I had a horrible job. High stress, poor management, every bad thing you could ask for. Two of my coworkers had recently had heart attacks, and my wife was afraid I was going to be number 3. I had tried to get out for years after realizing I couldn't change things, but the good jobs were few and far between and the ones that I did find were either short term, much lower pay, poor benefits or no better than what I had.
The day before we had left on that trip, I accepted a final offer on a new, permanent job. I had tried to get that job for almost two years, and finally got it. I knew that after we went to WDW, I was going to go back to work and drop my two week notice. Knowing that I was escaping from a bad job made that Disney trip even so much better!