I had a blast playing New Vegas, finished it in a very short time. I had a blast playing Skyrim too, for the first 10 hours. The story, combat and quests were all very bland though and made sure I barely made it through the main quests even though I was basically speedrunning it near the end. Worst thing is the stupid dungeon gameplay. You have this enormous open world in which all kinds of cool things could happen, and nearly every single mission takes place in a derpy dungeon which looks exactly the same for 2 hours while fighting the same enemy for 2 hours. Retrieve generic item X in generic dungeon Y and bring it back to generic fella Z, hurrdurr.
Just lazy game design if you ask me. New Vegas had much better quests, a very interesting and well paced story and the usual fucked up Fallout characters. One thing I want to note is how stupid it is that the Legion from New Vegas and the Empire from Skyrim basically looked exactly the same even though the settings are completely different.