If the world is round, why can't you see the curvature in the distance?

I'm planning a fantasy world that will be round, and I'm using google maps to get my ideas for the story. One thing is confusing me is that I can zoom out on google maps to the point where I'm lots of miles in the air looking down, and it's still a flat surface. It's not rounded.<br><br>I know this is google maps, and using images from satellites, but I want my fantasy world rounded like earth. Is there a reason why we can't see the curvature of the earth?<br><br>Thanks for any help in advance.