It's sad, because I remember when the name meant something else, but... I just wouldn't trust Google with my files. By which I mean, I wouldn't trust that I wouldn't wake up one day and find myself locked out of Google Drive with no way back. I don't trust their user interface not to accidentally delete things, either. Google manages to give the appearance of this mysterious Tronlike glowing entity that occasionally spins off new automatic services, but not in a way that gives you the impression that this glowing manifestation of Google has ever talked with a user.
On the plus side: what are the odds that you both get locked out AND you desperately need your backups on the same day? They're both unlikely events. (You might want sync, but hopefully you won't need the backup due to a hard drive crash or some such.)
Of course, if enough people use the service, then statistically, it will happen several times.
