It's weird, but I think it comes down to a couple of things.
First, I think we have this mentality that if something comes out that's absolutely amazing, we'll hear about it. Our friends will tell us, or we'll hear about it on the top gaming news sites. And so if you're telling me about a game that's already out, well, it obviously isn't THAT good, or else I'd have heard about it already.
Second, I think is just a much deeper human trait: potential is more exciting than a concrete thing. The woman or dude that walks by on the street, you imagine, would bring you far more happiness than the spouse you have now, surely. In other words, if the game isn't out yet, then my imagination is the only limit to how good it MIGHT be. I can still dream. But if the game is done and released, well then the result is concrete. It might be good, but it's still only "this" good, and can't possibly live up to my imagination.
We don't want to stop and realize that we're setting ourselves up to never be content and never enjoy anything in the present.
This may be a self serving post, but I've had a lot of time to sit and think about this as I sit and watch very few people download my game that I spent 2 years making, and I ponder how in the world do I break into this market without being one of the blessed big-name studios...?
Anyway, try it out. I think you'll like it.
Android store pagegoo.gl/jbvIsC
iOS store page