Do you carry your SATA drive around with you wherever you go and attach it to every computer you use?
Absolutely, my backpack which has my laptop goes everywhere with me. It has 2 external drives and a handful of USB sticks. around 5 or 6 TB in all and anything extra critical I make I put on another drive which I store safely. access is 100 times faster and more reliable than accessing google. I know that the service isn't going to be discontinued in X months time and I can be confident on who has access to my data. Even my keys for the car has 2 USB sticks on it with 256GB of data that is always with me even if there is somewhere I go without my backpack. Google can't hope to match the ease of access, vailability, security or speed.