I was... a bit disappointed in the game at first. Massive FO3 fan, but this one seemed a bit barren, with not a lot to do. (In FO3, if you wander off into the Wasteland, there is something around every corner. In this, if you wander out into the desert, most of the time you just find desert.)
However, stick with it, by the time you get to Freeside and Vegas you will be bombarded with so many quests that you have no idea what you are doing half the time... and that's a good thing