With fallout 3 I played the game through at least 6 times.. and everytime there was a DLC I got it and it only added to the game. I loved that the game never seemed to end. Even after I completed it I was able to just run around and smash some bad guy while waiting for the DLCs to be released. However, with New Vegas the game just sits on my desk waiting and gathering dust. I have reached a point where if I play any further I would have to start over to play any DLC that is released.
Since I can't continue to play the game I have lost almost all interest in it.I have honestly thought about returning my game and maybe waiting for the game of the year edition with all the patched and DLC's..
I hope that when Bethesda makes Fallout 4 they don't allow a repeat of the same mistake. Listening to you fans is always a win/win.