People use the cloud mostly because they want the same data to be accessible on their PC and their smartphone.
Those of us who don't use smartphones don't get much benefit from it. The rest of us do.
I at one time had occasion to make extensive use of Microsoft OneDrive, and found it very convenient for the purpose--the neatest, and scariest thing about it was that if I needed a file from my machine at home, I could go into it from work and get the file--not into what was on the cloud, but any file on the machine that was available to the username under which I had logged in.
Now I don't really use it much at all--on the new job everything work related is done on the company machine (actually it's mostly done on a mainframe--not a PC server but the real deal) and the home machine is for play again.
Back when I was helping people look for jobs, I did show people how to use Google Drive mostly because they kept losing the flash drives with their resumes on them. I should have looked into cloud-based password banks--they had to remember a password for every employer to whom they applied and it was frustrating for everyone when they forgot one--with the password bank the password and login for that could have gone in their file and the rest into the password bank.
I'm just thinking out loud here by the way, not really advocating this or that.