From my perspective,
most Bethesda games need mods.
Base game is just shit.
As a fan of New Vegas, FO4 just...does not seem enticing aside from...mods. NV base game is at least interesting enough with its story.
If you are on PC I would recommend S.T.A.L.K.E.R. Heck if your pc is decent enough you can just play a standalone mod for free: https://www.moddb.com/mods/stalker-anomaly