That's kind of the point isn't it? It's a game about spending your time wisely to get the desired outcome, making connections to people/changing them or finding/creating weaknesses in others to make sure you continue your goals, whatever they may be (Create a harem, help someone else win, try to do the right thing, etc).
Now whether some options seem pointless to go down could just be the time where you can use the info from the conversation not existing yet, and sometimes talking to certain people about certain things, may just be genuinely 'useless' mechanically., but they still expand on lore and give more info about characters so I think it's fine.