How interesting that your question is worded almost exactly like the question I just asked 10 hours before you asked yours: http://hubpages.com/question/142369/what-five-thin...
However, I'm not sure what this part of your question means: "what would you leave in the current world to make your life a better than this?"
If you mean "what would you leave WITH from the current world to make your life better than this," (what would I take with me), I'd answer the way I'd answer my own almost identical question:
1) An encyclopedia
2) A photograph of loved ones I'll have to leave behind
3) my piano
4) a really fat notebook full of paper
5) a bicycle
I assumed when asking my own question that though food and shelter are provided, there will not be technological or even advanced industrial capabilities in the new world, and therefore no electricity. We would return to an agrarian society and provide whatever we needed with our own hands.
What a treat to be able to answer my own question!