Me and many of the people I know use it everyday. It's the easiest 'cloud' storage out there and certainly the most popular. I'm not sure why you say it has no place in the future.
Think about what syncing as a whole really means for us ... seamlessly moving between laptop and desktop, upgrade devices just by signing in on your new one, etc... the promise of our Google and Apple accounts, but delivered properly and without platform lock-in.
Dropbox as it is now is going to look like a toy when someone really solves syncing for us. An abandoned toy if they're not the ones doing it.
If you remember Steve Jobs at WWDC 1997, he was talking about exactly that, extolling the virtues of having his home directory mounted via NFS.
It's a little surprising that, fifteen years later, there's still no good way for consumers to have that. iCloud may eventually evolve in that direction, but for now it feels incredibly half-assed.
Dropbox as it is now is going to look like a toy when someone really solves syncing for us. An abandoned toy if they're not the ones doing it.