If not alienated, the need for Dropbox is not as high as it used to. If you have a Mac, you can sync the documents and desktop natively directly to your phone and can right click any file within them to get a link or share it with other Mac users. This won’t cover every user but it was enough for me and several friends to drop Dropbox.
It is fine for what it is however all the large tech companies have some comparable offering(Google Drive, Icloud, OneDrive) for which the barrier to entry is much lower.