There used to be so much odd satisfaction from watching those blocks being put in order, knowing your drive would be just a tad more efficient because of it. It made me consistently do it on a weekly basis... Heck, I think the options I used were -f -h. That's how ingrained it got.
As others have said, HDDs still defrag, Windows just auto schedules it in the background.
If you don't have any HDDs, I'd reccomend getting some. You can get a metric ton of storage for cheap, and the speed difference is only noticable when gaming or moving large files across multiple ones. So just put your games on an SSD.