That's when you start making your own stories. In Skyrim, you can roleplay and create your own back stories and assign yourself missions. It might sound silly, but it actually helps the fun factor of the game. When I play GTA, I just tell myself to do mission-like things.
GTA 4 was everything but boring. It provided me with hours of entertainment and after all these years, I still play it the most compared to my other games. The key for me was to make up my own little stories as I went along with the singleplayer.
I have a backwards compatible 80gb PS3 that also contains a 500gb HD :). Don't know how I would've survived with an 80gb, considering how a lot of my games need more than 3gbs to install.
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