My observational habits seem to have atrophied, or at least shifted.
It's probably age. Or complacency. Or maybe I've built a life full of familiarity. But I don't notice myself noticing things any more. I don't spot new stuff like I used to.
I don't mind, especially, though it might make me less employable, because I find I have a new mental itch now - the urge to catalogue the connections between the things I've already noticed.
I find myself building enormous mental mind maps - this connects to this connects to this!
I'm entering my crazy wall phase.