I trust ME with my luggage more than I trust the airline baggage handlers.
In fact, the very first time I used ME, it seemed to be taking an awfully long time for the bag to get to my room. I called ME and they knew exactly where the bag was: the airline had put it on the wrong flight, and it had gotten to Orlando several hours after I did. They had retrieved the bag from the other flight and it was on a truck and on the way to the resort. The bag was delivered to my room less than an hour later.
If I'd checked the bag and picked it up myself, I would have been waiting and stressing at the bag claim area until all the bags were off the plane, then going to stand in line at the desk to arrange to have the bag delivered to my resort, and worrying for hours about when and if it would get there. Instead, ME handled all that while I was having fun at Epcot.