I tried really hard to play F4 like a RPG. Really, really hard. Some of the main problems I have with it are the Vocied MC, the background for him/her, the finding my son/father in the wasteland story, the Minutemen and more. I'm not even one to complain about video games that much, but F4 really feels so empty or rather, soulless. Sure jet-pack power armor is cool and the gun play is better than past games, but the world, to me, feels so big yet so small. At the same time, the MC never feels like he/she is my own. I'm always reminded about their son who they miss dearly and simply must find them because of parental reasons and I am always saying yes in 4 different ways.
Bit of a ramble that was.
Anyway, yea, I can see why the OP is having trouble playing. I've gotten close to 500 hours in Skyrim and over 900 in FO:NV but F4? I can't get passed the 60 hour mark. There is so much of nothing to do that I just don't want to not do nothing.
All in all, I'm worried about the next TES game.