I never claimed that this is 1 on 1 replacement for Dropbox. Dropbox is much much much more than what I am doing here. And I agree with you on that point. I choose DO because it is very easy to set up and get started with.

But for my needs this is all that I need and it solves my use case.

And regarding DO, its just one of the possible S3 providers out there. One could choose something else.