The Real World

A few weeks back I posted something on Facebook, which, not untypically, received some response. One such response referred to what happens in the "real world", the suggestion seemingly being that the point I was making was not grounded in this "real world" but was some form of unrealistic "pie in the sky" ideal.
That set me thinking. A lot of people these days see Christians and Christian beliefs as unrealistic, old-fashioned, even offensive...and certainly out of step with current postmodern world philosophies.
Having mulled this over for a few weeks, I cannot but come to the conclusion that if being a Christian and holding to what the Bible teaches is out of step with the Real World, then I definitely don't want to be a part of that world. Far from it. We Christians are called to be as "out-of-step" as it takes to hold true to what God teaches through His Word.
Much of what Jesus said while he was on earth was the complete opposite to what people expected to hear, or were maybe wanting to hear. Love your enemies, sell all your possessions, pray for your persecutors  etc. etc. Incidentally, all of these were, of course, in their own context, but you see my point.  Jesus' Biblical principles hold no less true today, and maybe are just as "out-of-step" as ever.
I then got to thinking -- what actually IS the "Real World"? Of course, on this modern-day God-less earth we are referring to whatever is popular, what is perceived to be morally or intellectually "right" by human standards. 
It may be a real world to those who don't know God, but isn't the truth more that it is God's world that is - in fact - real, and the one constructed by humans to justify the way we have decided to live - apart from God - is out of step with Biblical reality?
So, which world really IS "real"?