Each dimension becomes more challenging as you progress. And as BeginnerWrath has pointed out above, you end up getting quite the following of super hormonal women (well, one woman, really... but several of her?). Eventually we will have an "end-game" in some random dimension.
I'm really sorry for that. We got the server transferred over, and the error should be fixed for most everyone now, and everyone else within the next 24 hours. If you get the error again, clear your cache, and refresh a few times.
It is basically an easy way to adjust stats to clones who fight your pets. Just click one button and they all have stats your pets can defeat.