Cloud storage is great until your hard drive fails and you try to restore a 500 GB of data over your 20 Mbps cable connection... and you wait several days to get all of your files back. Bonus points on the aggravation index if you have an ISP that throttles your data or charges extra if you hit a monthly bandwidth cap.
Aye, its not perfect, but there is a legitimate use for it for many people.
I ran a serverworks chipset dell server at home with a 1.8ghz celeron for a number of years .. originally had sets of 120gb hard drives in it ... by the time I retired it, it was filled with 1-2tb drives.
I replaced it with a cheap home 4 disk NAS with a set of 3 TB drives running raid 5. Before that my "home server" used regular consumer level Athlon or K6 with regular cheap consumer RAM.
Anyhow, these days I just use an out of the box cheap 4 disk nas with 4 x 3tb drives in raid 5. I have "important" docs backed up offline at a family members place ...
I dont use cloud storage, but I see the value in it for lots of folks.