New Vegas elitists everywhere. I love both games, but I prefer Fallout 3. So yes, NV had better quests and it did a lot of things right, but it also got a lot of things VERY wrong.
The world and ability to explore, the world was terrible in New Vegas, ridiculously linear. You are literally forced to go one way. Deathclaws to the north, invisible walls to the east, so you have to go south through Primm, and then Nipton, through to Novac. Every. Single. Time. That is at least 5 hours of doing the exact same thing, every character. Whereas in FO3, you have complete freedom over where to go and your choices. Megaton? Nah, let's go directly to Rivet City this time! It was up to YOU, not the GAME. The New Vegas world was cramped, small, and had very boring, bland locations. There wasn't enough enemies to fight either, whereas in FO3 there were way more enemies to give it that feel of a truly dangerous world, danger could be around any corner in FO3. I also love the Metro tunnels, there was a whole underworld to explore with those tunnels!
Next up, the atmosphere. FO3 had an incredible atmosphere, and actually felt like a WASTELAND. It was dark, depressing, gritty like it should be. And then there's New Vegas, this is the part that I hate most about NV, it's way too HAPPY. It's so fruity dooty and cheery, that it sometimes makes me feel like I'm playing Oblivion. I got spurrrrs that jingle jangle, hehe!! No. This is not what Fallout is about. New Vegas is not serious enough and doesn't even feel like a wasteland. In fact, you could literally go down to the Mojave today, walk around, and get a similar experience. FO3 hit the nail on the head for post-apocalyptic atmosphere, it was depressing, hopeless like it should be! The world was dangerous, crazy, filled with psychopaths and mutants, and radiation actually mattered. The only time that I worried about radiation in NV was those craters on Black Mountain, or Camp Searchlight, but other than that, clean water and food was plentiful and you didn't even have to worry. I don't want spurrs that jingle jangle, I want the world that was set on fire. A dark, gritty, and dangerous post-apocalyptic nightmare world.
To wrap this up, I'm tired of the New Vegas elitism, because New Vegas isn't perfect either. It depends on what's more important to you. Quests and personal character development, or the world and atmosphere? New Vegas has better quests and character choices/involvement, but Fallout 3 has a far superior world and atmosphere. And for me personally, the world and the atmosphere are much more important to me, so therefore I like Fallout 3 better. Really, in the end both of them are equally good, they both have strengths and weaknesses, which then all boils down to personal preference. The problem is that some people think their preferences are fact, and this is where all the elitism occurs. Bethesda should try to make Fallout 4 have the best elements of both, to bring a balance between the FO3 and NV crowds, and make it the best Fallout game ever created.