I want to get an iPad Pro so I was contemplating how big of a hard drive I need. My current iPad Air 1 has only a 16Gb hard drive, which is pretty much full. I admittedly don't know much about Cloud storage and usage, pretty much just that it's there and has a seemingly endless amount of possible storage space. So, other than to perhaps hold all the Os and all the apps I use, why worry about the capacity (and greatly added expense) of your hard drive nowadays if everything else, photos, docs, videos ect., can be stored away and accessed via the 'Cloud'? Why doesn't every device have a minimal hard drive and maximum Cloud storage available?