that's messed up
but i found pretty decent cave's myself too some with 2 spots of diamonds in it
anyway overall minecraft is one of the most addictive games out there, and if u dont play the game in easy/medium or hard difficulty most of the time, then it's not good
also minecraft is all about creations, if u dont have any idea any plan or project the game will just be a boring sack of nothing.
U gotta always plan something big, pick hard materials to come across, craft alot of stuff, fight the monsters around ur turf at the risk of ur own well being, and if u loose try again, that's the fun of minecraft but better yet its to play it in multiplayer mode
i wish i knew how to do it..