They just want to level up as fast as they possibly can. Also, there are some plot holes that make no sense but most gamers do not care about those when focusing on leveling. The problem with Fallout 4 is that the game can be very grind-oriented. Related: The Best Builds For Survival In Fallout 4, Ranked Major actions always earn XP, like unlocking doors, killing enemies, and finishing quests. This means that progression and character evolution are directly linked to the experience points gained.
No matter how gamers look at it, Fallout 4 is an RPG.
