I dont get the F4 hate, yes I can understand it might not be in ppls top 10 this gen,but it definitely aint a bad game, while the story may not have the best finishes, the jouney was one hell of a blast. It had crazy twists and many cool locations, plus the side storys like discovering a farthers attempt to make a nuke bunker for his family or discovering the robbers in the sewers and lots of others was utterly fascinating, and combine that with some grrat graphics that while not being on uncharted 4s level were very impressive for such a massive open world game.
Honestly the decisions you make. The dialogue checks, side quests, followers and even the dlc are all better in New Vegas. And a lot of the time there's a peaceful resolution should you want to play peacekeeper.
Fallout 4 has better combat but dumbed down all the rpg elements it just boils down to go here kill everything. Go here bring something back. Much of the dialogue you can pretty much pick anything and get to the same result. Lets Minecraft too because why not. Yes it looks better. It would be weird if it didn't.