Honestly, as someone grew up in the 1970s, this is about the only thing about modern technology that amazes me (well, also space telescopes, but those were expected).
I mean, damn, for the longest time the big leap was from those big ass floppy disks the size of a manilla folder to the smaller 5 1/4" ones to finally the 3/ 1/2", in a space of what, maybe 15 years.
I remember going to Disney Land as a kid and my father having to lug around a gigantic video recorder. with the tape recorder in a backpack By the time I was in college, they were a little smaller, but not much. And either way you had about 2 hours of recording time if you were lucky. The video tape lasted like 20 years.
Now thanks to storage, a teeny-tiny device can record of hours