In a world without edges, only unending horizons

I was thinking about creating worlds and making fantasy maps and thinking how most of the time fantasy worlds just fade off along the edges, and how it often feels much better to me that way, than having precise edges and knowing everything that exists in that world. So I was thinking about worlds without edges. And then I was thinking, hey wait a minute, in a way that is our world, one of no edges, just horizons which keep revealing themselves. You think you can reach an edge, an end, a point of Here at last It Is, or I Am, or whatever, but each of those places we see from afar, when we reach them, reveal a whole new vista, and prove to be yet another step on the road, as much an end as a beginning.