For me, it must have been 20 years ago in 2005. I got Kingston’s 512MB flash drive for a Christmas present and oh my how great it felt to hold so much of memory in my pocket. After that it was clear to me that there is no use for floppies to me anymore.
Back in 2017 I found a bunch in our garage. I bought a cheap USB floppy drive off Amazon and went through them. It was real nostalgic hearing that noise and seeing the A: drive show up on the explorer sidebar. I archived them all on what is now my NAS.
Prior to that, probably the early 2000s. My parents bought a computer in 2004. It was the last one I can remember coming with an internal floppy drive.