Although there's bugs, this game is highly addictive and is one of those "Pick up and immediately play games"
New Vegas is one of those games that I would classify as a 'pick up and play, even if you only have ten minutes' Hence, you automatically start outside, not in a vault, therefor following the main storyline to progress throughout the game isn't need. Want to just kill a few roaches? No problem!
Overall, this game is simply amazing, and highly addictive. Even though there are tons of different bugs, I can guarantee you that you won't be dissapointed.