A couple of observations:
People are in too much of a rush to buy today. If you have the luxury of playing a demo, why wouldn't you take it, before laying down the cash? I can't believe all the early buyers, only did so to save what, $10? And if you were expecting this to be CM 4, you didn't read the fine print( or even the large print).
As for the bugs, anyone who has at least a little computer experience, knows that the first release of most software is chock full of them. So, don't buy the first release, wait for the patch, then demo it again, and see if you like it( and if it plays nice with your hardware). It's called being patient, and prudent, something that is in very short supply these days, as some of the comments attest to.
Personally, I have zero interest in this type of game, and wouldn't buy it for $10. I did play it, once, just to see what the hoopla was about, and came away non-plused, but as I said I have zero interest to begin with.