When I DM, this might be what happens:
On the mans body you find a ring.
Player: I take the ring.
When I'm a player, this is what happens.
On the mans body, you find a ring.
Me: Describe it. What kind of metal is it, what gems, is there a symbol on it?
Another example, which happened recently, was this:
You find yourself at the church and see a few people milling around and a ~--Stray Cat--~ sitting on the steps.
Players: I go into the church.
Completely ignoring the cat, which was a side adventure that could have been very beneficial to them.
The other thing that happens is my players go off on randome, out of character tangents that, while funny, are irrelevant. Some say i take the game to seriously, but the truth is I'm trying to play the game, which hardly happens...at all.
I really do think players need to have more of the responsibility. I'll make a world, but if you don't go find an adventure that's your problem. I don't run YOU ARE THE CHOSEN ONE campaigns. And players ought to focus more on the game. Its supposed to be fun, but when your not even playing, how is the game fun?