Sometimes there's just not new enjoyment to be had? Like, I had my golden years with it. But the way markets effect things like IP, there just isn't a reason to linger. Finding new hobbies can be rejuvenating too.
Edit: also it means I'll get to have wistful moments in the future where some random thing makes me pause and reflect on all the feelings I associate with Fallout. Before melodramatically sweeping all those feelings aside and double down on whatever new fascination I'm currently pursuing