I'm going to put in my measly 2 cents. I realy don't buy lego for investment purposes like many of you do here. Every set I own, I have built and displayed.
Now, I got the email notification for this set this morning and went online and looked at it, and 5 minutes later, I ordered it. I'm super excited to build this set. Sure it's not 'realistic', or may not be the best 'investment,' but screw it, I don't care. I buy lego because I love to build the sets and put things together. If down the road the set used returns more than retail I would be more than pleased with that.
I remember building lego as a kid and outside of the SW UCS models in the early 2000s, I would mess around with all my other lego sets and play the living hell out of them and sometimes toy around and make my own stuff up.
It appeals to me, just for the sole purpose of how unique it is. It's such an awesome set, and I just can't wait to put it together.