I will probably side with BoS because the institute was unbearable in-game - the music, the confusing corridors, ah. I wanted to rip my nuts off. BoS has decent characters, some cool armor, comfy airship. I'll probably replay the game or reload an earlier savefile to finish the institute quest as well. And while I would probably side with the institute in real life, it doesn't feel very heroic to do so as the protagonist I am playing as, or for any matter at all. Long-term benefits are rarely what we consider heroic in real life by any standards - the heroes are always those that sacrificed long-term for short-term gain for the people. In this case, short-term would be BoS (because they take care of problems in the Wasteland, but they don't fix them) and long-term would be the institute (because they work on the long-term solutions while ultimately ignoring short-term problems, which is why Father also hid that Virgil f*cked sh*t up).