Yes, I found it useful to export my projects to a portable drive in the past to avoid losing them when unforeseen disasters happen to a computer. The good ol' back-up, back-up, back-up ethic is not just for computer data. My advice on that front would be to use another place as well as 'cloud' storage. You never know when a company will decide to end their storage service (or end up being ransomwared without any backup of their own; I'm looking at you, garmin!). And then another again just in case the second spot is somehow compromised (and I know people who even say a forth!).