I started out in world 4, but it didn't last a lot.
Then came world 5, now, these where my times, somehow I managed to survive most of the game with the same char (after a few initial deaths before I got ender), and I was never assaulted or robbed. On the contrary, I was quite friendly to many locals Villages and their members taught me many ropes of this game. It was quite sad later, after many months and nuked grids, when everyone around left, it became just me in a world of ruins.
I have a lot of nostalgia for those times :>