Totally understand your doubts.
I mainly made this program to solve a tiny issue that got annoying and repetitive, so I asked myself, "Can I automate this?"
1. Since I mainly use Windows (for school software to run), I cannot simply do this, considering our school blocks any 3rd part app that isn't in their whitelist.
2. Sure, it doesn't _replace_ a USB drive, but it makes it a lot easier, which can _lessen_ the use of a USB drive.
3. Again, I really just made this for myself and a couple of friends at my high school so we can share projects without too much hassle. I just wanted to share it with the world because maybe someone else has the same dumb problem, which could help them too.
It's not meant to be a business, just a tool. I'll call that a win if it saves one other person from emailing a file to themselves.
Sorry, I might have edited that /s in too late! This is actually one of the early comments from the Dropbox launch thread:
https://news.ycombinator.com/item?id=8863#9224