I do have 1 world that I play very rarely, it is a hardmode hardcore I made years ago, and it has well over 1000 hours of gameplay; I am so scared I am gonna lose the world every time I play it, but I make myself play it at least 4 hours a month.
The Meaning of Life, the Universe, and Everything.
The only time I ever play on peaceful is when I'm building a map or something. Otherwise, i'll just play on Easy or Normal. I'm too much of a wimp for Hardcore. Unless you watch my video on it http://www.youtube.com/watch?v=hFhPEm1Cn08