Both are so true... Even now, I wish that games last longer, but at the same I don't have much time to play everything.

• The more I liked a game, the longer I wished it to last.
• Now, there is so much to do that small things like necessary grinding, will get a game put back on the shelf.

I believe the best thing game creators can do, it to make a Trophy/Achievement for everything that can a lot of take time to do. (Not bad ones like beat X monster 999 times, I mean something like reaching lv.99)