The game really gets good further in to it. Keep having a look, do quests and generally get to know the game. Fallout 3 is the best game to really get to know what its about. Keep going. you wont be dissapointed.
Well Fallout is the best way to know what it is about.
But from what the OP is saying it sounds like New Vegas isn't his sort of game. I'd suggest keep going at it for atleast a few more hours, if you can't find anything to keep your interest i'd just leave it.
As a side note: Near the end of the game a pop-up will appear informing that it will end soon and you should save before you continue. I don't want you to come back whining about how you didn't save before hand.