It amazes me that there are still people, gamers included, who haven't made the switch to an SSD because of the lame excuse of spinny disks being cheaper per GB. To me its like saying "I don't want a Tesla because I get more storage per dollar from an 18-wheel truck." Capacity is not the end-all be-all of storage. Speed plays a factor; otherwise we would all be using tape drives. Your daily driver (boot & programs drive) should be fast. Your storage container where you keep all your junk (movies, photos) should be big, but it doesn't have to be fast.
As I see SSDs get cheaper and cheaper the excuse to not make the switch gets more and more lame. Even the cheap government computer I use at work comes standard with an M.2 SSD! So if anybody is still booting from a spinny disk, the government is more up to date than they are!
Of course, if you can easily afford a Tesla semi (8TB SSD) more power to you.