I know, but folders work perfectly fine even up to a few thousand files. It doesn't take me long to find a vacation picture from 1966, for example. I look in the 1966 folder, which doesn't have a lot in it. The preview thumbnails from file explorer quickly let me hone in.
It'd take me far more time to set up a proper tag database than I'd save looking things up.
It's still infinitely better than a random shoebox with random snapshots in it.