I only used 8" for a short time before the 5-1/4"s started becoming common. I used 5-/14" a lot - I think I still have an old Commodore 5-1/4" drive. that thing is MONSTEROUS! I bet it weighs 20 pounds!
I remember when the 3.5" first came out...I thought they'd never "catch on"

- I never said I was a prophet! LOL!
I also remember my first hard drive! I installed it myself into my Tandy 1000SX which had come with (2) 5-1/4" floppy drives. I'd load the OS from one and had data on the other.
then I installed a 20 MEG hard drive CARD into an open ISA slot!!!! MAN! THAT WAS THE SHIZZLE!!!!