I only use dropbox for backup of my computer and do not want Dropbox to share or otherwise access my files for any reason other than to preserve them for my use

I only use dropbox for backup of my computer and do not want Dropbox to share or otherwise access my files for any reason other than to preserve them for my use. I do not want Dropbox to make them available to anyone else without my explicit authorization. The revised TOS seems to stress the file sharing aspect which makes me very uncomfortable continuing to use Dropbox. Here is what I wrote back to tos-feedback@dropbox.com (interesting that the default reply-to was no-reply@dropboxmail.com which doesn't make it seem like they are really interested in feedback) Please consider splitting the service into file sharing and backup and having a different agreement for each. I cannot and do not accept these new terms for your backup service and will have to look for an alternate supplier if you cannot amend your new approach: these are not the terms I agreed to when I signed up for the service. In addition, two weeks notice strikes me as a very short window for such a significant change: please consider extending the notice period.