It's funny but my wife is getting to the point where she refuses to use the monorail. It has made the "news" too many times due to various issues. She keeps saying, "I'm not getting stuck on an elevated train with you."
Come to think of it, she has a point. I probably wouldn't do well in that situation.
It seems like a person could catch a bus and be at Epcot in the same time it takes to walk. However, like you, I prefer taking the leisurely walks and I think that I covered the ground from GF to Poly in 15 minutes. It definitely didn't take long and didn't feel that long.