>>720321815 (OP)
For a first playthrough I would say it clicks with you when you finish your build and become a powerhouse capable of clearing quarry junction or the brotherhood bunker. Also the branching paths are cool. You can betray everyone in this game, even your companions. Though all that was 10 years ago. It aged like milk and it's hard to overlook so I hope you're playing it modded, otherwise you should look for that viva new vegas guide or move on if it's too much work for you.