And they don't read HN either, for the most part. You're not getting anything like a cross-section of opinion of the population here, on any topic.

I'm among those who don't see any need for Dropbox, but readily admit that obviously millions of others do.

And they're all willing to pay ~$10/month for it to Just Fucking Work. Build things that solve people's problems.

That's only if you need MORE storage. Heck i am happy with my data limit, and yes, the major attraction is the "Just Fucking Works" part. Its the usability factor. Just cuz you CAN write your own web browser, doesn't mean you wouldn't use firefox or chrome

Dropbox is free for the vast majority of people.