What happens if you have a physical failure of your hard drive?
What if there is a fire?
What if the PC / LapTop is stolen?
Buy a new [hard disk|computer] and restore my backups?
Yes, there are many ways of backing up your data, an offsite backup has it's benefits.
Agreed (please point out if I disputed that anywhere...).
I'm sure you can poke holes in anything, and nobody is as smart as you are.

You claimed that company couldn't possibly access their users' files after Stew raised understandable privacy concerns.
I merely pointed out that their own FAQ page proves you wrong, because we've got plenty of non-technical folks on this forum who might value the privacy of their data a bit more than you do.
What do you get for people signing up via your referral link?
I don't see how their FAQ's prove me wrong, their FAQ's clearly point out that your data is not accessible by their employees... they do keep a copy of your encryption key for a forgotten password, since I am a customer I am familiar with their security, and the numerous challenges they have in place so you can retrieve your data (or if you had to restore to a new computer)
I don't work for this company, and I couldn't care less if anybody signs up for their service or not. It offers online backup and security in my opinion. (the security of a data center is better than my home)
To say that I am pointing non-technical people in the direction of a company that does not value privacy is completely wrong.
Some people like myself travel around the country for a living, all my data is on a laptop, I do not have the time to safely backup my data to an external hard drive.
I also experienced a flood in my home two years ago, and lost everything, all my data was lost, had I been using an online backup, I would have been able to restore my data to a new machine, rather than starting over.
Regarding what I get, I get the same thing as the person that signs up on through the link, one extra month.