From seeing Man like Monkey talk about Fallout 4, I've started playing it again after not playing it for a few months. I also realized that I had never finished the game because of my ignorance. I just finished the main story last night, and it was really well done.
Spoiler alert:
I've been enjoying the post-game exploration more than I thought I would as well. There's still some things that I have yet to do and a lot of side quests that I'd like to finish. Definitely not as bad of a game that I initially thought.