For some reason, no matter how hard I try, I can never finish a Bethesda title (I mostly mean 'The Elder Scrolls', I guess).
It's a pattern; I like one at first, I'm pretty immersed, but then the gameplay grows old as the game goes on and I find myself losing interest before the end which before this one had already been the case with Morrowind and Oblivion, and later, years after, with Skyrim + with a standalone mod 'Enderal' that I swear I put like 60-70 hours into and never finished. Something about Fallout 3 made me nearly 100% it though.