Even on Earth you have to search for interesting land formations. I live in Iowa. It's a long way before there's anything interesting. Anyway, it's not the distance that's the problem, but the lack of anything at all. Eve and Laythe should be more interesting than they are. Duna should have more remnants of a past atmosphere. Instead we're left with "anomalies" that make no sense except for "lol, here's a monolith".