Instead, I found myself mostly balancing between the Minutemen and the Railroad.
The only group I didn't care about was the Brotherhood, because the Brotherhood are dicks and always turn out to be the bad guys. Throughout the course of my 30 hours with Fallout 4 I took careful steps to ensure I always had an 'out' or peaceful solution to any problem involving the multiple factions in the world. Take this! It's a key to unlock the credits!
No warning, no dialogue box saying, 'Yo, this is gonna mess up EVERYTHING,' nothing. Then the writers decided that peace in a game about war is apparently impossible, and the game somehow funneled me into a quest holding a bomb that would undo everything that I had been working so hard to accomplish.