premoving

Just read a slightly nasty exchange about "takebacks".  Some critic got his panties in a knot and wrote "this is real chess here...", and not a place for takebacks.  Anyway, while I love premoving, I can't help but feel it too is unlike "real chess" and, therefore, wonder why it's permitted.  Thoughts from anyone? 

its for learning purpose.  Some people are too dumb to understand some simple things like that.  Takeback is also for friends who wants to have fun.  There is nothing wrong with that.  Its just that some people think they Kasparov or ....

I recommend not to be judgmental. Some players find a game interesting and want to continue it after they make a mistake. Don't be critical. Either live with it or don't play that member again.

Question, the heading is premoving and the discussion seems to be about takeback. Which?