The hardest part for me is when you become attached to a companion over so many hours exploring and fighting together, you learn so much about them through their dialogue. You finish their companion quest...

Then their character development hits a brick wall.
You never make any new memories with them, no new conversations or new celebrations aside from infrequent comments on your main quest decisions. Then you realize just how hollow the world, filled with cardboard NPCs, has become and you're the only one emotionally invested in the story.

Then you realize the only fallout game that can offer real companionship in a fallout universe... is the over-monetized hell that is Fallout 76... Then you cry...